What the label states, the lot delivers — net peptide mass, not gross powder weight, purity reported as measured rather than rounded up, and a Certificate of Analysis for every lot.
Net peptide mass, not powder weight; purity as measured, not rounded up; a COA per lot.
Net peptide + purity not rounded up. COA per lot.
FDA PCAC reviews 7 peptides for the 503A bulks list (BPC-157, KPV, TB-500, MOTs-C, Emideltide, Semax, Epitalon). Read our compounder's decision tree. Read our briefing →
FDA PCAC reviews 7 peptides for the 503A bulks list in July. Read →
FDA PCAC: 7 peptides under review. Read →
Copper-binding tripeptide (Ala-His-Lys·Cu) · hair & repair research
Overview
AHK-Cu (Copper Tripeptide-3) is a metallopeptide complex formed by chelation of the alanine-histidine-lysine tripeptide with a divalent copper ion. It is structurally and functionally distinct from GHK-Cu (Copper Tripeptide-1, glycine-histidine-lysine sequence, CAS 49557-75-7), and the two should not be confused — note that some commercial websites do mislabel AHK-Cu as "Copper Tripeptide-1," a naming error; the amino acid sequence (Ala-His-Lys vs. Gly-His-Lys) is the reliable distinguishing feature. Vialdyne releases AHK-Cu as a lyophilized peptide against a ≥98% HPLC main-peak specification, supplied with a batch-specific Certificate of Analysis covering RP-HPLC purity, mass-spec identity, appearance, and water content. Lots are released only after the COA is on file.
Applications & buyer fit
Cosmetic-peptide buyers fall into two groups: established beauty / med-aesthetic brands extending an existing line, and OEM clients building a private-label catalog from scratch. The first group usually wants active material plus stability data in their existing carrier matrix; the second usually wants a finished formulation under their label. Both need INCI naming verified, regulator-specific safety files (CPNP for EU, FDA OTC monograph for US where relevant), and packaging-compatibility data.
Sourced for
Buyer fit
Documentation that ships
Procurement note: INCI naming, SDS, and stability data in the chosen carrier ship with the active; finished-product safety remains the brand owner's responsibility.
Primary buyer fit: academic and contract research laboratories.
Specifications
Certificate of Analysis
Published released-batch COAs for AHK-Cu, every lot HPLC-verified. These are previews — request the full high-resolution certificate for any lot.
VerifiedRequest full COA →AHK-Cu
VD260428-CU100012 · 99.12%
VerifiedRequest full COA →AHK-Cu
VD260428-CU20010 · 99.15%
VerifiedRequest full COA →AHK-Cu
VD260428-CU50011 · 98.98%
Regulatory note
Research-use-only reference material; not for human or veterinary use.
Selected literature
Frequently asked questions
AHK-Cu ships as blue to blue-purple lyophilized powder with a batch-specific Certificate of Analysis reporting RP-HPLC purity (≥98%), mass-spec identity and sequence Ala-His-Lys, and appearance. Recommended storage: 2–8°C, protect from light. Supplied strictly as a research reference material — not for human or veterinary use.
Related peptides
3-mer
Copper tripeptide-1
28-mer
Cell-penetrating Wnt/Dvl-modulating peptide · hair-growth research
3-mer
Lys-Pro-Val α-MSH C-terminal tripeptide
