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GHK-Cu (C₁₄H₂₄N₆O₄·Cu²⁺) is a copper-coordinated peptides complex formed from the tripeptide Gly-His-Lys chelated with divalent copper ions. In laboratory research, it is examined for its involvement in extracellular matrix dynamics and peptides-mediated cellular signaling processes. Experimental studies have shown that GHK-Cu influences collagen-related pathways, gene regulatory activity, and copper-dependent redox systems, making it a useful reference compound for research into tissue remodeling, metalloprotein interactions, and regenerative biochemical mechanisms.

Epithalon (C₁₄H₂₂N₄O₄) is a synthetic tetrapeptide composed of the amino acid sequence Ala–Glu–Asp–Gly and is studied in laboratory research as a derivative of endogenous thymic peptides systems. Experimental investigations have associated this peptides with regulatory activity related to telomerase-associated processes, oxidative balance, and circadian gene expression through pathways linked to pineal peptides signaling. As a result, Epithalon is commonly employed as a reference compound in studies focused on genomic integrity, epigenetic regulation, and neuroendocrine peptides signaling mechanisms.

Both are supplied in individual 3 mL vial as a lyophilized (freeze-dried) powder requiring reconstitution with a laboratory diluent. For laboratory research use only. Not for human or veterinary consumption.