
Research peptides used to study collagen synthesis, pigmentation cascades and skin regeneration. The category bundles GHK-Cu, a glycyl-L-histidyl-L-lysine copper complex investigated in connective-tissue and matrix research, together with Melanotan II, a cyclic α-MSH analog explored as an agonist at the melanocortin receptors MC1R and MC4R.
Copper tripeptide complex and melanocortin-receptor agonist are frequently examined jointly in research on collagen formation, matrix remodeling and pigmentation mechanisms across complementary signaling pathways.
GHK-Cu is the copper tripeptide complex of glycyl-L-histidyl-L-lysine, a sequence that also occurs endogenously in connective tissue. In research it is used as a tool compound to probe collagen synthesis, extracellular matrix dynamics and skin-regeneration pathways. The divalent copper center is mechanistically relevant because it is discussed as a cofactor in redox-linked reactions of connective-tissue biology investigated in vitro and in preclinical models.
The Skin category groups research peptides used in studies of collagen synthesis, extracellular matrix biology, pigmentation cascades and skin regeneration. GHK-Cu is the glycyl-L-histidyl-L-lysine copper complex and is applied as a tool compound in connective-tissue and matrix-metabolism research. Melanotan II is a synthetic cyclic α-MSH analog that acts as an agonist at the melanocortin receptors MC1R and MC4R and is examined in preclinical work on melanogenesis and pigmentation signaling. Both peptides are supplied strictly as Research Use Only materials for laboratory investigations.
All peptides in the Skin category are specified at a minimum HPLC purity of 99 percent and are verified for identity and molecular mass by mass spectrometry. Certificates of analysis containing the corresponding HPLC and MS data are available on request. Materials are labeled as Research Use Only (RUO) research reagents and are not intended for human use, nor for diagnostic, therapeutic or cosmetic applications. References to study findings describe preclinical or in vitro observations and must not be interpreted as approved medical indications.
In their lyophilized form, GHK-Cu and Melanotan II are stable for at least 24 months when stored unopened at minus 20 degrees Celsius in a dry, light-protected location. For research use the lyophilized powder is typically reconstituted with bacteriostatic water. After reconstitution, refrigerated storage at 2 to 8 degrees Celsius is recommended, with a typical in-use window of up to 28 days. GHK-Cu is particularly light sensitive and should additionally be protected from direct sunlight to limit oxidation of the coordinated copper center.