ethyl 6-((4,4-dimethyl-1,1-dioxidothiochroman-6-yl)ethynyl)nicotinate; Ethyl 6-((4,4-dimethyl-1,1-dioxidothiochroman-6-yl)ethynyl)nicotinate; Ethyl Ester 6-[2-(3,4-Dihydro-4,4-dimethyl-1,1-dioxido-2H-1-benzothiopyran-6-yl)ethynyl]-3-pyridinecarboxylic Acid; Tazarotene Sulphone;
