GHK-Cu

GHK-Cu (Glycyl-L-histidyl-L-lysine copper(II) complex, CAS# 49557-75-7) is an endogenous tripeptide–copper(II) coordination complex naturally occurring in human plasma, urine, and saliva. Comprising the tripeptide Gly-His-Lys chelated to a Cu²⁺ ion through its glycine amine, histidine imidazole, and deprotonated backbone nitrogen, GHK-Cu forms a high-affinity copper(II) complex with a distinctive blue colour in solution. It is studied in preclinical research across multiple cellular signalling contexts, including extracellular matrix remodelling, fibroblast activity models, copper transport and chaperone studies, and broad gene expression modulation assays. Supplied by BIOSTACKS as a lyophilized powder for in vitro laboratory research use. This compound has not been authorized by Health Canada for any therapeutic, clinical, or human use.

Each vial arrives as lyophilized (freeze-dried) powder and must be reconstituted with bacteriostatic water before use in a research setting. Add the water slowly down the inside wall of the vial, then swirl gently until clear — never shake. Once reconstituted, keep it refrigerated and use within 28 days.

Sealed lyophilized vials are stable at ambient temperatures for 30 days and indefinitely at −20°C. After reconstitution, refrigerate at 2–8°C in the original vial and use within 28 days. Keep the vial out of direct light and avoid repeated temperature swings and agitation.

Quality and purity tests are performed on random batches, covering identity (mass spec), purity (HPLC) and endotoxin results.

Orders placed before 3:00 PM ET on a business day are typically shipped the same day, in plain, discreet packaging; transit is estimated at 2–4 business days.