Thiamidol is an emerging whitening ingredient that is a derivative of resorcinol and has no cytotoxicity. Its inhibitory effect on tyrosinase is very strong, 119 times that of 377 and 455 times that of kojic acid. Product Name    Thiamidol CAS   1428450-95-6 Appearance   White Powder MF   C13H14N2O3S Molecular Weight   278.33 Purity 99% Storage Keep in a cool, dry, dark location in a tightly sealed …