# StarBio

> StarBio (https://starbio.org/) is a United States supplier of research-grade peptides for in vitro laboratory research, shipping from Florida. Independent third-party laboratories test StarBio compounds for identity (mass spectrometry) and purity (HPLC), and each Certificate of Analysis is published on its product page and in a public COA library. Products are sold for research use only: not for human or veterinary use, and not for diagnostic or therapeutic purposes.

## Key facts

- Third-party testing: 37 published reports covering 29 compounds, from Janoshik Analytical and Medutest. Median HPLC purity 99.17% (range 98.42-99.86%).
- Each certificate names the batch, test date, laboratory and measured purity; testing is done by the labs, not by StarBio or its suppliers. Janoshik Analytical reports can be checked independently on janoshik.com using the report number.
- Shipping: within the United States only, all 50 states, from Florida. Standard $4.99, Two Day $14.99, Overnight $39.99. Free standard shipping on orders over $100. Tracking and shipment protection on every order.
- Compounds ship as sealed lyophilized powder, with a cold pack where a compound requires one.
- Buyers: qualified researchers and institutions aged 21 or older, buying for in vitro laboratory work.
- Payment: cards, Apple Pay, Google Pay, Klarna, Zelle and Cash App.
- Returns: products cannot be returned because of degradation risk. StarBio replaces orders damaged or lost in transit, shipped wrong, or not matching their batch COA, when reported within 14 days with photos.
- Lab programs: volume pricing from 2 vials, Research Panels, Lab Credit and a rewards program.
- Support: support@starbio.org, ticketed contact form with a one-business-day reply, and a Discord community.

## Research compounds

- [5-Amino-1MQ](https://starbio.org/product/5-amino-1mq/): Also known as: 5-amino-1-methylquinolinium. Small-molecule NNMT inhibitor (quinolinium). CAS 685079-15-6. C10H11N2+, 159.21 g/mol. 50 mg $49.99. Third-party COA published: Janoshik Analytical report #136377.
- [AHK-Cu](https://starbio.org/product/ahk-cu/): Also known as: Ala-His-Lys copper complex. Copper-binding tripeptide complex. CAS 126828-32-8 (free peptide). C15H26N6O4 (free peptide), 354.40 g/mol (free peptide). 50 mg $34.99.
- [AOD-9604](https://starbio.org/product/aod-9604/): Also known as: Tyr-hGH(177-191), hGH fragment 177-191 analogue. hGH C-terminal fragment analog (Tyr-hGH 177-191). CAS 221231-10-3. C78H123N23O23S2, 1815.1 g/mol. 10 mg $89.99. Latest third-party COA: 99.38% HPLC purity, Medutest report WWB-5AD-4095, tested Feb 7, 2026.
- [ARA-290](https://starbio.org/product/ara-290/): Also known as: Cibinetide, pHBSP. Erythropoietin-derived helix-B surface peptide. CAS 1208243-50-8. C51H84N16O21, 1257.3 g/mol. 10 mg $49.99.
- [BPC-157](https://starbio.org/product/bpc-157/): Also known as: Body Protection Compound-157, PL 14736, Bepecin. Synthetic pentadecapeptide. CAS 137525-51-0. C62H98N16O22, 1419.54 g/mol. 10 mg $39.99. Latest third-party COA: 99.70% HPLC purity, Janoshik Analytical report #136388, tested Apr 22, 2026.
- [BPC-157 / TB-500 (Wolverine)](https://starbio.org/product/bpc-157-tb-500-wolverine/): Also known as: BPC-157 and TB-500 blend. Peptide blend (BPC-157 + TB-500). 10 mg $79.99; 20 mg $149.99. Latest third-party COA: 99.07% HPLC purity, Medutest report WWB-BB10-9123, tested Feb 20, 2026.
- [Cagrilintide](https://starbio.org/product/cagrilintide/): Also known as: AM833. Acylated amylin analog peptide. CAS 1415456-99-3. C194H312N54O59S2, 4409.01 g/mol. 10 mg $69.99. Latest third-party COA: 99.83% HPLC purity, Janoshik Analytical report #136380, tested Apr 22, 2026.
- [Cartalax](https://starbio.org/product/cartalax/): Also known as: AED, Ala-Glu-Asp. Synthetic peptide bioregulator (tripeptide). C12H19N3O8, 333.29 g/mol. 20 mg $69.99.
- [CJC-1295 / Ipamorelin (No DAC)](https://starbio.org/product/cjc-1295-ipamorelin-no-dac/): Also known as: Modified GRF(1-29) and ipamorelin, Mod GRF 1-29 / ipamorelin blend. Blend: GHRH analog + growth hormone secretagogue (CJC-1295 no-DAC + Ipamorelin). 10 mg $59.99. Third-party COA published: Janoshik Analytical report #136386.
- [Dihexa](https://starbio.org/product/dihexa/): Also known as: PNB-0408. Synthetic angiotensin IV analog (oligopeptide). CAS 1401708-83-5. C27H44N4O5, 504.66 g/mol. 10 mg $59.99.
- [DSIP](https://starbio.org/product/dsip/): Also known as: Delta sleep-inducing peptide, emideltide. Nonapeptide (neuropeptide). CAS 62568-57-4. C35H48N10O15, 848.82 g/mol. 5 mg $29.99. Latest third-party COA: 98.73% HPLC purity, Medutest report WWB-DS5-9320, tested Feb 24, 2026.
- [Epithalon](https://starbio.org/product/epithalon/): Also known as: Epitalon, AEDG, Ala-Glu-Asp-Gly. Synthetic tetrapeptide. CAS 307297-39-8. C14H22N4O9, 390.35 g/mol. 10 mg $29.99. Latest third-party COA: 98.65% HPLC purity, Medutest report WWB-ET10-2057, tested Feb 27, 2026.
- [GHK-Cu](https://starbio.org/product/ghk-cu/): Also known as: Copper tripeptide-1, Gly-His-Lys copper complex. Copper-peptide complex. CAS 89030-95-5. C14H24N6O4·Cu, 340.38 g/mol (free peptide). 50 mg $29.99; 100 mg $57.99. Latest third-party COA: 99.37% HPLC purity, Janoshik Analytical report #136402, tested Apr 22, 2026.
- [GLOW](https://starbio.org/product/glow/): Also known as: BPC-157 / TB-500 / GHK-Cu blend. Multi-peptide research blend. 70 mg $89.99. Latest third-party COA: 98.45% HPLC purity, Medutest report WWB-BBG70-2871, tested Feb 14, 2026.
- [GLP-1 (SM)](https://starbio.org/product/glp-1-sm/): GLP-1 receptor agonist peptide. CAS 910463-68-2. C187H291N45O59, 4113.58 g/mol. 10 mg $49.99.
- [GLP-2 (TR)](https://starbio.org/product/glp-2-tr/): Dual GIP/GLP-1 receptor agonist peptide. CAS 2023788-19-2. C225H348N48O68, 4813.53 g/mol. 10 mg $59.99.
- [GLP-3 (RT)](https://starbio.org/product/glp-3-rt/): Triple GIP/GLP-1/glucagon receptor agonist peptide. CAS 2381089-83-2. C221H342N46O68, 4731.33 g/mol. 10 mg $69.99; 20 mg $134.99; 30 mg $199.99. Latest third-party COA: 99.86% HPLC purity, Janoshik Analytical report #136394, tested Apr 22, 2026.
- [Glutathione](https://starbio.org/product/glutathione/): Also known as: GSH, reduced L-glutathione, gamma-Glu-Cys-Gly. Tripeptide antioxidant (gamma-glutamyl thiol tripeptide). CAS 70-18-8. C10H17N3O6S, 307.33 g/mol. 1500 mg $59.99. Latest third-party COA: 99.15% HPLC purity, Medutest report WWB-GTT-8626, tested Feb 24, 2026.
- [IGF-1 LR3](https://starbio.org/product/igf-1-lr3/): Also known as: Long R3 IGF-1, LR3-IGF-1. Recombinant IGF-1 analog (Long R3). CAS 946870-92-4. C400H619N111O115S9, ~9111 g/mol. 1 mg $69.99. Latest third-party COA: 99.19% HPLC purity, Medutest report WWB-IG1-7981, tested Feb 24, 2026.
- [Ipamorelin](https://starbio.org/product/ipamorelin/): Also known as: NNC 26-0161. Growth hormone secretagogue (GHS-R1a agonist pentapeptide). CAS 170851-70-4. C38H49N9O5, 711.85 g/mol. 10 mg $49.99. Latest third-party COA: 99.15% HPLC purity, Medutest report WWB-IP5-5236, tested Feb 5, 2026.
- [Kisspeptin](https://starbio.org/product/kisspeptin/): Also known as: Kisspeptin-10, metastin (45-54). KISS1R (GPR54) agonist peptide — Kisspeptin-10. CAS 374675-21-5. C63H83N17O14, 1302.44 g/mol. 10 mg $49.99.
- [KLOW](https://starbio.org/product/klow/): Also known as: BPC-157 / TB-500 / GHK-Cu / KPV blend. Multi-peptide research blend. 80 mg $99.99. Latest third-party COA: 99.63% HPLC purity, Medutest report WWB-KL80-6138, tested Feb 2, 2026.
- [KPV](https://starbio.org/product/kpv/): Also known as: Lys-Pro-Val, alpha-MSH (11-13). Tripeptide (C-terminal alpha-MSH 11-13 fragment). CAS 67727-97-3. C16H30N4O4, 342.43 g/mol. 10 mg $39.99. Latest third-party COA: 99.44% HPLC purity, Medutest report WWB-KP10-4608, tested Feb 21, 2026.
- [Melanotan I](https://starbio.org/product/melanotan-i/): Also known as: Afamelanotide, MT-I, [Nle4, D-Phe7]-alpha-MSH. Linear melanocortin receptor agonist peptide. CAS 75921-69-6. C78H111N21O19, 1646.87 g/mol. 10 mg $29.95. Latest third-party COA: 99.53% HPLC purity, Medutest report WWB-MT1-7786, tested Feb 20, 2026.
- [Melanotan II](https://starbio.org/product/melanotan-ii/): Also known as: MT-II, Melanotan 2. Cyclic melanocortin receptor agonist peptide. CAS 121062-08-6. C50H69N15O9, 1024.18 g/mol. 10 mg $29.95. Latest third-party COA: 99.53% HPLC purity, Medutest report WWB-ML10-5469, tested Feb 16, 2026.
- [MOTS-C](https://starbio.org/product/mots-c/): Also known as: Mitochondrial ORF of the 12S rRNA type-c. Mitochondrial-derived peptide. CAS 1627580-64-6. C101H152N28O22S2, 2174.62 g/mol. 10 mg $39.99; 40 mg $134.99. Latest third-party COA: 99.48% HPLC purity, Medutest report WWB-MS10-1799, tested Feb 15, 2026.
- [NAD+](https://starbio.org/product/nad/): Also known as: Nicotinamide adenine dinucleotide, beta-NAD. Dinucleotide coenzyme (pyridine nucleotide). CAS 53-84-9. C21H27N7O14P2, 663.43 g/mol. 500 mg $69.99. Latest third-party COA: 98.83% HPLC purity, Medutest report WWB-NJ500-4030, tested Feb 25, 2026.
- [Pinealon](https://starbio.org/product/pinealon/): Also known as: EDR, Glu-Asp-Arg. Synthetic peptide bioregulator (tripeptide). CAS 175175-23-2. C15H26N6O8, 418.40 g/mol. 10 mg $49.99.
- [PT-141](https://starbio.org/product/pt-141/): Also known as: Bremelanotide. Cyclic melanocortin receptor agonist peptide. CAS 189691-06-3. C50H68N14O10, 1025.18 g/mol. 10 mg $29.99. Latest third-party COA: 99.70% HPLC purity, Medutest report WWB-P41-9870, tested Feb 16, 2026.
- [SELANK](https://starbio.org/product/selank/): Also known as: TP-7, Thr-Lys-Pro-Arg-Pro-Gly-Pro. Heptapeptide (tuftsin analog). CAS 129954-34-3. C33H57N11O9, 751.89 g/mol. 10 mg $29.95. Latest third-party COA: 99.22% HPLC purity, Janoshik Analytical report #136391, tested Apr 22, 2026.
- [SEMAX](https://starbio.org/product/semax/): Also known as: ACTH(4-7)-Pro-Gly-Pro, Met-Glu-His-Phe-Pro-Gly-Pro. Heptapeptide (ACTH 4-10 fragment analog). CAS 80714-61-0. C37H51N9O10S, 813.93 g/mol. 10 mg $29.95. Latest third-party COA: 98.59% HPLC purity, Medutest report WWB-XA10-2430, tested Feb 25, 2026.
- [Sermorelin](https://starbio.org/product/sermorelin/): Also known as: GRF(1-29)-NH2, GHRH(1-29) amide. GHRH analog (GHRH 1-29 amide). CAS 86168-78-7. C149H246N44O42S, 3357.9 g/mol. 10 mg $59.99.
- [SNAP-8](https://starbio.org/product/snap-8/): Also known as: Acetyl octapeptide-3. Cosmetic peptide (SNAP-25 N-terminal fragment analog). CAS 868844-74-0. C41H70N16O16S, 1075.17 g/mol. 10 mg $29.99. Latest third-party COA: 98.42% HPLC purity, Medutest report WWB-NP810-6958, tested Feb 1, 2026.
- [TB-500](https://starbio.org/product/tb-500/): Also known as: Thymosin beta-4 fragment 17-23, Ac-LKKTETQ. N-acetylated heptapeptide (thymosin beta-4 17-23 fragment). CAS 885340-08-9. C38H68N10O14, 889.02 g/mol. 10 mg $39.99. Latest third-party COA: 98.72% HPLC purity, Janoshik Analytical report #136382, tested Apr 22, 2026.
- [Tesamorelin](https://starbio.org/product/tesamorelin/): GHRH analog (N-acylated GHRH 1-44 amide). CAS 218949-48-5. C221H366N72O67S, 5135.9 g/mol. 10 mg $69.99. Latest third-party COA: 99.12% HPLC purity, Medutest report WWB-TSM5-8240, tested Feb 9, 2026.
- [Thymosin Alpha-1](https://starbio.org/product/thymosin-alpha-1/): Also known as: Thymalfasin. N-acetylated 28-residue peptide (thymalfasin). CAS 62304-98-7. C129H215N33O55, 3108.3 g/mol. 10 mg $39.99. Latest third-party COA: 98.95% HPLC purity, Medutest report WWB-TA10-3421, tested Feb 6, 2026.
- [VIP](https://starbio.org/product/vip/): Also known as: Vasoactive intestinal peptide. 28-residue neuropeptide, C-terminally amidated. CAS 37221-79-7. C147H237N43O43S, 3326.8 g/mol. 10 mg $49.99. Third-party COA published: Janoshik Analytical report #136378.

## Research supplies

- [Recon Water](https://starbio.org/product/recon-water/): Also known as: Bacteriostatic water, 0.9% benzyl alcohol diluent. Preserved aqueous diluent (0.9% benzyl alcohol). 10 ml $16.99. Latest third-party COA: 98.63% HPLC purity, Medutest report WWB-AA10-5800, tested Feb 12, 2026.

## Documentation

- [About StarBio](https://starbio.org/about/): Who StarBio is, where it ships from, who tests its compounds, and how to reach it.
- [Certificate of Analysis library](https://starbio.org/coa/): Every published third-party report, by compound and lot. Machine-readable copies: https://starbio.org/coa.json and https://starbio.org/coa.csv.
- [Quality standards](https://starbio.org/quality/): How identity, purity, content and lot traceability are verified.
- [Request a certificate](https://starbio.org/verify-lot/): Request the Certificate of Analysis that covers a specific order, by order number.
- [Research database](https://starbio.org/research-database/): Per-compound molecular profiles, storage guidance and peer-reviewed references.
- [Research guides](https://starbio.org/research-guides/): Articles on testing, storage and documentation.

## Guides

- [Is StarBio Legit? What You Can Check Yourself](https://starbio.org/is-starbio-legit/): Which of StarBio's claims can be checked on websites it does not control, which rest on documents it hosts, and what is not documented.
- [Documentation Register, November 2026: Every Laboratory Report on File](https://starbio.org/documentation-register-2026-11/): The full list of third-party laboratory reports StarBio holds as of November 2026: 37 reports from Janoshik Analytical and Medutest, with numbers, purity, dates, and the gaps.
- [Why StarBio Publishes Report Numbers](https://starbio.org/why-we-publish-report-numbers/): A purity figure without a report number cannot be checked. Why StarBio publishes the laboratory, the number and the date for all 37 reports on file, and says where it has none.
- [How to Read a Peptide Mass Spectrum: Charge States, Isotopes and Deconvolution](https://starbio.org/how-to-read-a-peptide-mass-spectrum/): What the mass spectrum on a certificate shows: charge states, how to work out a mass from two peaks, monoisotopic against average mass, common mass shifts, and what it cannot prove.
- [Three Ways to Match a Vial to Its Certificate: Order Number, Report Number and the Lot Address](https://starbio.org/match-a-vial-to-its-certificate/): A certificate describes a batch, not your vial. Three ways to connect the two at StarBio: by order number, by laboratory report number through the lot address, and through the COA library.
- [Acetate, TFA and Net Peptide Content: Why Two 10 mg Vials Can Weigh Differently](https://starbio.org/acetate-tfa-net-peptide-content/): Why a peptide powder is never 100% peptide: counter-ions, water and net peptide content, acetate against TFA salts, a worked example, and what measured content on a report tells you.
- [What Research Use Only Means on a Product Page](https://starbio.org/what-research-use-only-means/): What the research-use-only label means, what it changes about a product page, which questions a vendor can and cannot answer, and how to tell a vendor that takes it seriously.
- [How Research Compounds Ship: Cold Packs, Transit Time and What to Check on Arrival](https://starbio.org/how-research-compounds-ship/): How StarBio ships research compounds: the three services and their cut-off, why lyophilized powder travels well, a seven-point check on arrival, and what shipment protection covers.
- [Ipamorelin vs Sermorelin: Two Growth Hormone Axis Peptides Compared as Research Materials](https://starbio.org/ipamorelin-vs-sermorelin/): Ipamorelin and sermorelin compared as research materials: a 5-residue synthetic secretagogue against a 29-residue GHRH fragment, 711.85 against 3357.9 g/mol, and reports on file.
- [Melanotan I vs Melanotan II vs PT-141: Three Melanocortin Peptides Compared as Research Materials](https://starbio.org/melanotan-i-vs-melanotan-ii-vs-pt-141/): Melanotan I, Melanotan II and PT-141 compared as research materials: linear against cyclic, the 1 Da gap between Melanotan II and PT-141, and the reports on file for each.
- [BPC-157 vs TB-500: Two Peptides Compared as Research Materials](https://starbio.org/bpc-157-vs-tb-500/): BPC-157 and TB-500 compared as research materials: 15 residues against 7, 1419.54 against 889.02 g/mol, the thymosin beta-4 naming trap, and the Janoshik reports on file.
- [Semax vs Selank: Two Heptapeptides Compared as Research Materials](https://starbio.org/semax-vs-selank/): Semax and Selank compared as research materials: both seven residues ending in Pro-Gly-Pro, 813.93 and 751.89 g/mol. What differs on a chromatogram, and the reports on file.
- [Sermorelin vs CJC-1295 vs Tesamorelin: Three GHRH Analogues Compared as Research Materials](https://starbio.org/sermorelin-vs-cjc-1295-vs-tesamorelin/): Three GHRH analogues compared as research materials: sequence, modifications and mass (3357.9, 3367.9, 5135.9 g/mol), how to tell them apart on a certificate, and reports on file.
- [AHK-Cu Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/ahk-cu-research-guide/): AHK-Cu as a research material: the copper(II) complex of Ala-His-Lys, a close relative of GHK-Cu. Free-peptide and complex mass, the copper isotope pattern, and what its literature covers.
- [Pinealon Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/pinealon-research-guide/): Pinealon as a research material: the tripeptide Glu-Asp-Arg (EDR), CAS 175175-23-2, 418.40 g/mol. Origin, what its literature covers, and the pyroglutamate point for an analyst.
- [Cartalax Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/cartalax-research-guide/): Cartalax as a research material: the tripeptide Ala-Glu-Asp (AED), 333.29 g/mol. Where it comes from, what its small literature covers, and how a tiny acidic peptide is analysed.
- [Dihexa Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/dihexa-research-guide/): Dihexa as a research material: a modified dipeptide derived from angiotensin IV, CAS 1401708-83-5, 504.66 g/mol. Origin, a caution on its literature, and analytical notes.
- [VIP Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/vip-research-guide/): VIP (vasoactive intestinal peptide) as a research material: 28 residues, C-terminal amide, CAS 37221-79-7, 3326.8 g/mol. Literature areas, analytical notes, report on file.
- [ARA-290 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/ara-290-research-guide/): ARA-290 (cibinetide) as a research material: an 11-residue peptide from erythropoietin's helix B, CAS 1208243-50-8, 1257.3 g/mol. Literature areas and analytical notes.
- [Kisspeptin Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/kisspeptin-research-guide/): Kisspeptin-10 as a research material: Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2, CAS 374675-21-5, 1302.44 g/mol. Origin of the name, literature areas, analytical notes.
- [SNAP-8 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/snap-8-research-guide/): SNAP-8 (acetyl octapeptide-3) as a research material: Ac-EEMQRRAD-NH2, CAS 868844-74-0, 1075.17 g/mol. Its relation to Argireline, the methionine point, and the report on file.
- [Thymosin Alpha-1 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/thymosin-alpha-1-research-guide/): Thymosin alpha-1 (thymalfasin) as a research material: 28 residues, N-acetylated, CAS 62304-98-7, 3108.3 g/mol. Literature areas, why it has no 280 nm signal, report on file.
- [5-Amino-1MQ Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/5-amino-1mq-research-guide/): 5-Amino-1MQ as a research material: a small-molecule NNMT inhibitor, not a peptide. CAS 685079-15-6, 159.21 g/mol as the cation, what the salt form means for content, reports on file.
- [Epithalon Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/epithalon-research-guide/): Epithalon (Epitalon) as a research material: Ala-Glu-Asp-Gly, CAS 307297-39-8, 390.35 g/mol. Origin, literature areas, the isoaspartate point on its certificate, report on file.
- [IGF-1 LR3 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/igf-1-lr3-research-guide/): IGF-1 LR3 as a research material: an 83-residue recombinant protein, CAS 946870-92-4, about 9111 g/mol, three disulfide bonds. Literature areas, analytical notes, report on file.
- [Cagrilintide Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/cagrilintide-research-guide/): Cagrilintide as a research material: 37-residue acylated amylin analogue, CAS 1415456-99-3, 4409.01 g/mol. Literature areas, analytical notes for a lipidated peptide, reports on file.
- [AOD-9604 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/aod-9604-research-guide/): AOD-9604 as a research material: Tyr-hGH(177-191), CAS 221231-10-3, 1815.1 g/mol, one disulfide bridge. What the literature covers, analytical notes and the report on file.
- [PT-141 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/pt-141-research-guide/): PT-141 (bremelanotide) as a research material: cyclic heptapeptide, CAS 189691-06-3, 1025.18 g/mol. How it differs from Melanotan II, literature areas, and the report on file.
- [Melanotan I Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/melanotan-i-research-guide/): Melanotan I (afamelanotide) as a research material: 13-residue alpha-MSH analogue, CAS 75921-69-6, 1646.87 g/mol, what the literature covers, analytical notes, report on file.
- [Melanotan II Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/melanotan-ii-research-guide/): Melanotan II as a research material: cyclic heptapeptide, CAS 121062-08-6, 1024.18 g/mol. The lactam ring, the 1 Da difference from PT-141, literature areas and report on file.
- [Selank Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/selank-research-guide/): Selank as a research material: Thr-Lys-Pro-Arg-Pro-Gly-Pro, CAS 129954-34-3, 751.89 g/mol. Tuftsin origin, what three prolines do to a chromatogram, and the reports on file.
- [DSIP Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/dsip-research-guide/): DSIP (delta sleep-inducing peptide) as a research material: CAS 62568-57-4, Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, 848.82 g/mol, literature areas, analytical notes, report on file.
- [Glutathione Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/glutathione-research-guide/): Glutathione as a research material: gamma-Glu-Cys-Gly, CAS 70-18-8, 307.33 g/mol. The unusual gamma bond, reduced versus oxidised forms on a certificate, and the report on file.
- [NAD+ Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/nad-research-guide/): NAD+ as a research material: a dinucleotide coenzyme, not a peptide. CAS 53-84-9, 663.43 g/mol, what the literature covers, the 260 and 340 nm check, and the report on file.
- [BPC-157 / TB-500 (Wolverine) Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/bpc-157-tb-500-wolverine-research-guide/): The BPC-157 and TB-500 blend as a research material: both sequences and masses, what the separate literatures cover, how to read a two-peak certificate, and the report on file.
- [CJC-1295 / Ipamorelin (No DAC) Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/cjc-1295-ipamorelin-no-dac-research-guide/): CJC-1295 without DAC (Mod GRF 1-29) and ipamorelin as a research blend: what each is, why the name confuses two molecules, and the per-component report on file.
- [KLOW Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/klow-research-guide/): KLOW as a research material: a four-part blend of BPC-157, TB-500, GHK-Cu and KPV. Component identity, the 2 Da problem on its certificate, and the report on file.
- [GLOW Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/glow-research-guide/): GLOW as a research material: a three-part blend of BPC-157, TB-500 and GHK-Cu. What each component is, what a blend certificate should show, and the report on file.
- [Research Peptide Glossary: 40 Terms From the Certificate, the Label and the Product Page](https://starbio.org/research-peptide-glossary/): Forty terms you meet on a research peptide certificate, vial label and product page, defined plainly: HPLC area percent, net peptide content, lyophilized, acetate salt, lot.
- [Sermorelin Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/sermorelin-research-guide/): Reference page for sermorelin as a research material: GHRH(1-29) amide, CAS 86168-78-7, 3357.9 g/mol, what the literature covers, analytical notes and storage.
- [How to Verify a Janoshik or Medutest Report Before You Order](https://starbio.org/verify-janoshik-medutest-report/): A certificate is only as good as its lookup. How to check a Janoshik report number on the lab's site, what a Medutest report shows, and what a forged COA looks like.
- [Bacteriostatic Water vs Sterile Water for Reconstituting Lyophilized Research Peptides](https://starbio.org/bacteriostatic-water-vs-sterile-water/): What separates bacteriostatic water from sterile water, why the 0.9% benzyl alcohol matters for a multi-draw vial, and how to read the diluent's own certificate.
- [MOTS-c Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/mots-c-research-guide/): A reference page for MOTS-c as a research material: CAS, sequence and mass, its mitochondrial origin, which research areas the literature covers, the methionine oxidation and 280 nm points on its certificate, storage, and the independent report on file for StarBio's lot.
- [KPV Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/kpv-research-guide/): A reference page for KPV (alpha-MSH 11-13, Lys-Pro-Val) as a research material: CAS, sequence and mass, where the fragment comes from, which research areas the literature covers, the diketopiperazine point on its certificate, storage, and the independent report on file for StarBio's lot.
- [Ipamorelin Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/ipamorelin-research-guide/): A reference page for Ipamorelin as a research material: CAS, sequence and mass, its unnatural residues and what they mean for a certificate, which research areas the literature covers, storage, and the independent report on file for StarBio's lot.
- [Semax Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/semax-research-guide/): A reference page for Semax (ACTH 4-7 Pro-Gly-Pro) as a research material: CAS, sequence and mass, where it was developed and its regulatory status, which research areas the literature covers, the methionine oxidation point on its certificate, storage, and the independent report on file for StarBio's lot.
- [GHK-Cu Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/ghk-cu-research-guide/): A reference page for GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) as a research material: CAS, sequence and mass, its discovery in human plasma, which research areas the literature covers, how a copper-peptide certificate reads, storage, and the independent reports on file for StarBio lots.
- [TB-500 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/tb-500-research-guide/): A reference page for TB-500 (thymosin beta-4 fragment 17-23) as a research material: CAS, sequence and mass, how the fragment relates to the full protein, which research areas the literature covers, how purity and identity are verified, storage, and the independent reports on file for StarBio lots.
- [BPC-157 Research Guide: Identity, Literature, Analysis and Documentation](https://starbio.org/bpc-157-research-guide/): A reference page for BPC-157 as a research material: CAS, sequence and mass, where the sequence comes from, which research areas the literature covers, how its purity and identity are verified, storage, and the independent reports on file for StarBio lots.
- [What 99% Purity Actually Means: HPLC Area Percent vs Net Peptide Content](https://starbio.org/what-99-percent-purity-means/): HPLC purity is a relative measure of the peptide fraction, not the mass in the vial. How area percent, net peptide content and mass-spec identity fit together on a certificate.

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