Peptide Research Library
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What Is B7-33? Relaxin-2 Analog Research Overview (2026)
Quick Answer B7-33 is a synthetic single-chain peptide built from part of the B chain of human relaxin-2, and it binds the RXFP1 receptor. Chemists designed…
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Peptide Blends vs Single Vials: How to Choose for Research (2026)
For Research Use Only. Not for use in diagnostic or therapeutic procedures. Choosing between peptide blends vs single peptides comes down to one design question: does…
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What Is SLU-PP-332? Structure, Research Use & US Supply
Quick Answer SLU-PP-332 is a synthetic small-molecule agonist of the estrogen-related receptors ERRŒ±, ERRŒ≤ and ERRŒ≥ (CAS 303760-60-3, PubChem CID 5338394). It is not a peptide,…
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GLOW Peptide Blend: Composition, Ratio & COA (2026)
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What Is the KLOW Peptide Blend? Composition, Ratio, COA & US Supply
Quick Answer KLOW is an 80mg research peptide combination of GHK-Cu 50mg, BPC-157 10mg, TB-500 10mg and KPV 10mg, a 50/10/10/10 ratio. The name comes from…
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Best US Peptide Supplier: How to Choose a Trustworthy Source (2026 Checklist)
A 10-point checklist for choosing a trustworthy US peptide supplier: verifiable COAs, HPLC and mass-spec testing, US stock, clear policies and the red flags to avoid.
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Lyophilized vs Pre-Mixed Peptides: What’s the Difference?
Research peptides show up in one of two forms: a dry powder in a sealed vial, or a liquid already dissolved and ready to use. The…
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How to Verify a Peptide COA Is Real (and Spot a Faked One)
A certificate of analysis is supposed to be your proof that a research peptide is what the label claims. It only works as proof if the…
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Third-Party vs In-House Peptide Testing: What’s the Difference & Which to Trust (2026)
When a vendor says its research peptide is 99% pure, the number is only half the story. The other half is who measured it. A purity…
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How to Read a Peptide COA and Evaluate Research Peptide Quality (US Lab Buyer’s Guide)
To read a peptide Certificate of Analysis (COA), find the batch or lot number on the document, confirm who ran the testing, check the HPLC purity…
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TB-500 & MOTS-c: FDA Status After the July 2026 Review
In July 2026, an FDA advisory committee voted to recommend both TB-500 and MOTS-c for the Section 503A compounding list, part of a wider vote that…
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Is BPC-157 Legal in 2026? Regulatory Status Explained
As of August 2026, BPC-157 is not an FDA-approved drug, not a legal dietary supplement, and not yet approved for pharmacy compounding.
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