Obtusifolin-2-O-glucoside (compound 7) is a Tyrosinase inhibitor (IC50=9.2 μM). Obtusifolin-2-O-glucoside can be isolated from cassia seed.
Obtusifolin-2-O-glucoside (compound 7) (10 μM; 48 h) inhibits melanin production in α-MSH-treated B16F10 melanoma cells[1].
References:
[1]. Lee GY, et al. Tyrosinase inhibitory components from the seeds of Cassia tora. Arch Pharm Res. 2018 May;41(5):490-496.
















