Research use only · EU-warehoused · COA on every batch · HPLC ≥99% · Shipment 2–5 days
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AHK-Cu

AHK-Cu

Lyophilised · ≥99% (HPLC) ·

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Custom quantity
1

Supplied lyophilised. Reconstitution typically uses bacteriostatic water.

Independently third-party tested · COA on every batch · 48h EU dispatch
[01]

Overview

AHK-Cu (Ala-His-Lys copper complex) is a tripeptide-copper(II) chelate studied in vitro for its role in angiogenesis, wound-healing signalling, and extracellular-matrix remodelling. Sequence Ala-His-Lys; free tripeptide CAS 126828-32-8; molecular weight 354.41 g/mol (free tripeptide, C₁₅H₂₆N₆O₄); supplied lyophilised at HPLC ≥99% purity. For laboratory research use only; not for human or veterinary use.

Copper is essential to life but dangerous when loose, so the body carries it on small peptide carriers — and chemists have learned to copy them. AHK-Cu is a synthetic copper-binding tripeptide, alanyl-histidyl-lysine complexed with a copper(II) ion, presented as a characteristic blue lyophilized powder. As a member of the histidine-containing copper-peptide family, it serves as a model system for studying copper coordination chemistry and copper-dependent cellular signaling.

A peptide built around a metal. The histidine imidazole, the N-terminal amine, and the peptide backbone create a coordination geometry well suited to chelating Cu(II), echoing the canonical Xxx-His copper-binding motifs found in serum and matrix peptides. Structural and thermodynamic studies of closely related GHK and DAHK copper complexes have mapped how such tripeptides bind copper and modulate its redox behavior (Hureau et al., 2011; Trapaidze et al., 2012), providing the chemical backdrop against which AHK-Cu is investigated.

What the research explores. Work on AHK and related copper peptides spans several directions:

  • Copper coordination and redox control — X-ray and solution studies characterize how His-containing tripeptides bind Cu(II) and influence radical chemistry (Hureau et al., 2011; Guilloreau et al., 2007).
  • Hair follicle biology — a tripeptide-copper complex has been examined for effects on human hair growth in vitro (Pyo et al., 2007).
  • Osteogenic signaling — a vitamin C-conjugated AHK construct was studied for BMP-2-induced osteogenic differentiation in myoblasts (Jung et al., 2018).
  • Cytoprotection — related glycyl-alanyl-histidine peptides have been tested against hydrogen peroxide toxicity in PC12 cells (Shimura et al., 2017).

These findings come from in vitro and biochemical research describing coordination chemistry and cellular activity; they do not establish human safety or efficacy. Full citations are listed under the Scientific References tab.

Physicochemical profile. CAS 682809-81-0 · Molecular formula C₁₅H₂₄ClCuN₆O₄ · Molecular weight 451.39 g/mol · Sequence Ala-His-Lys (Cu²⁺) · Appearance: blue lyophilized powder · Soluble in water.

Specification & quality. Each individually sealed vial contains 100 mg of AHK-Cu as a blue lyophilized powder at ≥99% purity by HPLC. Every batch is third-party tested, with a Certificate of Analysis (COA) available. Store at −20 °C, protected from light and moisture.

This product is intended for laboratory research use only (RUO). It is not a drug, food, cosmetic, or dietary supplement, and is not for human or veterinary use, ingestion, or diagnostic application. Handling is restricted to qualified research professionals operating in an appropriately equipped laboratory.

Supplied for in-vitro laboratory research use only (RUO). Not a drug, food or supplement; not for human or veterinary use.

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Quality & COA

Certificate of Analysis
Lot-specific COA with every order

Certificate of Analysis — lot-specific COA ships with every order and is available on request.

Each lot is tested by an independent third-party laboratory for identity (mass spectrometry) and purity (HPLC). The Certificate of Analysis for your specific batch ships with the order and is available on request — no house data, no exceptions.

HPLC purity
≥99% (HPLC)
Method
HPLC + MS
Endotoxin
Reported
[02]

Data Sheet

CAS number682809-81-0
Molecular formulaC₁₅H₂₄ClCuN₆O₄
Molecular weight451.39
SequenceAla-His-Lys (Cu²⁺)
Purity≥99% (HPLC)
Physical formBlue lyophilized powder
Quantity100mg/vial
SolubilitySoluble in water
StorageStore at -20°C, protect from light
Shelf life24 months from manufacture date
OriginEU · Slovakia
ClassificationResearch use only
[03]

Scientific References

01 Liang G, Xia T, Huang J et al.. Dually quenched and targeting nanoprobe for sensitive and specific fluorescence imaging of tumor. Biosens Bioelectron. 2026. PMID: 41145062. doi:10.1016/j.bios.2025.118149. PubMed 02 Zhang J, Zhang Q, Li H et al.. Antioxidant activity of SSeCAHK in HepG2 cells: a selenopeptide identified from selenium-enriched soybean protein hydrolysates. RSC Adv. 2021. PMID: 35497303. doi:10.1039/d1ra06539d. PubMed 03 May NV, Jancsó A, Enyedy ÉA. Binding Models of Copper(II) Thiosemicarbazone Complexes with Human Serum Albumin: A Speciation Study. Molecules. 2021. PMID: 34063080. doi:10.3390/molecules26092711. PubMed 04 Jung JI, Park KY, Lee Y et al.. Vitamin C-linker-conjugated tripeptide AHK stimulates BMP-2-induced osteogenic differentiation of mouse myoblast C2C12 cells. Differentiation. 2018. PMID: 29567599. doi:10.1016/j.diff.2018.03.001. PubMed 05 Gonzalez P, Vileno B, Bossak K et al.. Cu(II) Binding to the Peptide Ala-His-His, a Chimera of the Canonical Cu(II)-Binding Motifs Xxx-His and Xxx-Zzz-His. Inorg Chem. 2017. PMID: 29190078. doi:10.1021/acs.inorgchem.7b01996. PubMed 06 Shimura H, Tanaka R, Shimada Y et al.. Glycyl-alanyl-histidine protects PC12 cells against hydrogen peroxide toxicity. BMC Biochem. 2017. PMID: 29166856. doi:10.1186/s12858-017-0089-x. PubMed 07 Afonso C, Tabet JC, Giorgi G et al.. Gas-phase doubly charged complexes of cyclic peptides with copper in +1, +2 and +3 formal oxidation states: formation, structures and electron capture dissociation. J Mass Spectrom. 2012. PMID: 22359331. doi:10.1002/jms.2956. PubMed 08 Trapaidze A, Hureau C, Bal W et al.. Thermodynamic study of Cu2+ binding to the DAHK and GHK peptides by isothermal titration calorimetry (ITC) with the weaker competitor glycine. J Biol Inorg Chem. 2012. PMID: 21898044. doi:10.1007/s00775-011-0824-5. PubMed 09 Hureau C, Eury H, Guillot R et al.. X-ray and solution structures of Cu(II) GHK and Cu(II) DAHK complexes: influence on their redox properties. Chemistry. 2011. PMID: 21780203. doi:10.1002/chem.201100751. PubMed 10 Díaz-Ruíz A, Ríos C, Carvajal-Sotelo J et al.. Neuroprotective effect of DAHK peptide in an occlusive model of permanent focal ischemia in rats. Neurochem Res. 2010. PMID: 19777346. doi:10.1007/s11064-009-0060-3. PubMed 11 Guilloreau L, Combalbert S, Sournia-Saquet A et al.. Redox chemistry of copper-amyloid-beta: the generation of hydroxyl radical in the presence of ascorbate is linked to redox-potentials and aggregation state. Chembiochem. 2007. PMID: 17577900. doi:10.1002/cbic.200700111. PubMed 12 Pyo HK, Yoo HG, Won CH et al.. The effect of tripeptide-copper complex on human hair growth in vitro. Arch Pharm Res. 2007. PMID: 17703734. doi:10.1007/BF02978833. PubMed 13 Bar-Or D, McDonald MC, Thiemermann C. Reduction of infarct size in a rat model of regional myocardial ischemia and reperfusion by the synthetic peptide DAHK. Crit Care Med. 2006. PMID: 16691133. doi:10.1097/01.CCM.0000220493.10289.03. PubMed 14 Bar-Or D, Rael LT, Thomas GW et al.. Inhibitory effect of copper on cystathionine beta-synthase activity: protective effect of an analog of the human albumin N-terminus. Protein Pept Lett. 2005. PMID: 15777277. doi:10.2174/0929866053587048. PubMed 15 Szczepanik W, Czarny A, Zaczyńska E et al.. Preferences of kanamycin A towards copper(II). Effect of the resulting complexes on immunological mediators production by human leukocytes. J Inorg Biochem. 2004. PMID: 14729305. doi:10.1016/j.jinorgbio.2003.10.013. PubMed

References are illustrative of the research literature surrounding this compound. All claims relate to in-vitro and animal models only.

[05]

FAQ

AHK-Cu is a synthetic copper-binding tripeptide — alanyl-histidyl-lysine complexed with copper(II) — studied in skin, hair, and tissue-regeneration research. The bound copper gives the lyophilized powder its characteristic blue color. Condor Research supplies it as a 100 mg vial at ≥99% HPLC purity, strictly for in-vitro laboratory research use only.

Both are copper(II)-binding tripeptides, but they differ in their first residue: AHK-Cu is alanyl-histidyl-lysine, while GHK-Cu is glycyl-histidyl-lysine. GHK-Cu is the more extensively studied of the two, particularly in skin-regeneration research, whereas AHK-Cu is often investigated in hair and pigmentation contexts. Condor Research offers each as a separate ≥99% HPLC, research-use-only reference compound.

GHK-Cu is the more extensively characterized copper tripeptide, with a long research history in skin and tissue regeneration. AHK-Cu, differing by a single N-terminal residue (alanine instead of glycine), has a narrower but distinct literature, frequently in hair and pigmentation research. Both are supplied as separate ≥99% HPLC, research-use-only reference materials, each with a batch COA.

AHK-Cu is offered as a 100 mg vial and GHK-Cu as a 50 mg vial, reflecting their separate catalog formats; the stated masses are analytical reference quantities, not doses. To compare value on a per-mg basis, or for current pricing on either copper peptide, contact info@condorresearch.com. Both are ≥99% HPLC research-use-only reference materials.

AHK-Cu (alanyl-histidyl-lysine-copper) is often investigated in hair-focused regeneration research, while GHK-Cu (glycyl-histidyl-lysine-copper) is more associated with skin-regeneration literature. The single-residue difference shifts their research emphasis despite both being copper(II) tripeptides. Researchers select by target pathway. Condor Research supplies both as distinct ≥99% HPLC, research-use-only reference compounds.

They are not interchangeable. Although both are copper(II)-binding tripeptides, the N-terminal difference (alanine in AHK-Cu, glycine in GHK-Cu) gives each a distinct research profile and literature base. They should be treated as separate reference compounds rather than substitutes. Both are offered as ≥99% HPLC, research-use-only materials for in-vitro laboratory study only.

Each AHK-Cu lot (CAS 682809-81-0) is tested by an independent third-party laboratory by HPLC for identity and purity, with mass spectrometry confirmation, and ships against a batch-specific Certificate of Analysis verifying ≥99% purity. For specifics on how copper loading is documented for the current lot, request the COA at info@condorresearch.com.

Yes. AHK-Cu is supplied strictly for laboratory research use only (in vitro). It is not a medicine, food, supplement, cosmetic, or medical device, and is not for human or veterinary use, administration, or consumption. Condor Research provides no dosing, protocols, or human-use guidance. Purchase is limited to qualified professionals and institutions aged 18 or over.

Yes. The blue color comes from the copper(II) ion bound within the AHK tripeptide and is an expected feature of the complex, not a sign of contamination. For analytical laboratory preparation only, AHK-Cu is water-soluble and the diluent volume you choose sets the working concentration. This is laboratory handling information, not human-use guidance.

Store the sealed lyophilized AHK-Cu vial at -20°C, protected from light, with a 24-month shelf life from manufacture. As a copper(II) complex it is light-sensitive like other copper peptides; standard sterile aqueous diluent is suitable for analytical preparation. This is laboratory handling information only and does not apply to any human or animal use.

[06]

Reviews

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4.8
47 verified reviews
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Apr 2026
Exactly what research needs

No marketing fluff — just characterised material with paperwork. The data sheet and CAS matched our records precisely.

J. Meijer · Biotech R&D · NL Verified purchase
Mar 2026
High purity, clear labelling

Lyophilised cake was uniform and dissolved fully. Would appreciate a digital COA portal, but the PDF on request worked fine.

Dr. A. Bianchi · University · IT Verified purchase
Mar 2026
Trustworthy supplier

Identity by MS confirmed in our facility. Communication around storage and handling was precise and professional.

K. Wójcik · Research group · PL Verified purchase
Feb 2026
Reference-grade consistency

Reconstitution was clean with no visible particulates. The lot-specific COA matched the assay we ran in-house — purity is exactly as stated.

Dr. M. Hartmann · Research lab · DE Verified purchase
Jan 2026
COA matched our own HPLC

We verify every incoming compound by HPLC; this batch came back within tolerance of the certificate. Dispatch from the EU warehouse was quick.

L. Fischer · University group · AT Verified purchase

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