Dersimelagon (MT-7117) is an orally active, selective agonist for the melanocortin 1 receptor (MC1R), demonstrating EC50 values of 8.16 nM (h), 3.91 nM (cm), 1.14 nM (m), and 0.251 nM (r) across species such as human, cynomolgus monkey, mouse, and rat, respectively. It exhibits strong affinity for human MC1R and MC4R, with Ki values of 2.26 nM and 32.9 nM, respectively. This compound is applied in the study of skin pigmentation.

Dersimelagon phosphate is a selective melanocortin-1 receptor (MC1R) agonist that increases skin melanin without sun exposure and is being developed to increase light tolerance in EPP/XLP patients.