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Category

Specialty Research

Melanocortin, senolytic and neuro-targeted research compounds.

Specialty research compounds cover the receptor families that fall outside the metabolic, regenerative and growth-factor groupings: melanocortin receptor ligands, neuropeptides and nootropic-class sequences, and targeted constructs studied in narrow model systems.

Every compound here is supplied for in vitro and preclinical laboratory research only. None is approved for human or veterinary use, and none may be administered.

Specialty Research research compounds

Melanocortin receptor ligands

Melanotan II is a cyclic lactam analog of alpha-MSH with broad activity across melanocortin receptor subtypes, while PT-141 (bremelanotide) is its metabolite with a comparatively MC4R-weighted profile. Because they are structurally close, receptor-subtype selectivity — not simple binding affinity — is the meaningful distinction in research design.

Cyclic peptides in this family are conformationally constrained, which makes them chromatographically distinctive and generally more stable than their linear counterparts.

Neuropeptides and nootropic-class sequences

Semax and selank are short synthetic sequences derived respectively from ACTH(4-10) and tuftsin, studied in neurotrophic-factor expression and neurochemical models. Both are short, highly soluble and early-eluting. Dihexa is a very different construct — an angiotensin IV analog studied in hepatocyte-growth-factor and synaptogenesis models, and considerably more lipophilic.

Solubility varies sharply across this group. Lipophilic constructs may require a co-solvent step before aqueous dilution, and the co-solvent then has to be accounted for as a vehicle control in any cell-based assay.

Handling and identity

Several compounds in this category are photosensitive; amber vials or foil-wrapped storage are standard once material is in solution. Cyclic and constrained peptides can also show unexpected retention behaviour, so purity methods are developed per sequence rather than applied generically.

Specialty Research — frequently asked questions

Related research categories

All compounds listed on this page are supplied for laboratory research use only. They are not drugs, supplements or cosmetics, and are not intended for human or veterinary consumption. See our research use policy.