(2011/02/24)
6-(2-(2-benzoyloxy-4,4-dimethylthiochroman-6-yl)ethynyl)nicotinic acid ethyl ester
6-(2-acetoxy-4,4-dimethylthiochroman-6-ylethynyl)nicotinic acid ethyl ester
tazarotene
ethyl 6-[(2-hydroxy-4,4-dimethyl-3,4-dihydro-2-thiochromen-6-yl)ethynyl]pyridine-3-carboxylate
benzoyl chloride