6-[2-(4,4-dimethylthiochroman-6-yl)ethynyl] nicotinic acid hydrochloride

6-溴-4,4-二甲基硫代苯并二氢吡喃

4-(4,4-dimethyl-1-oxo-2,3-dihydrothiochromen-6-yl)-2-methylbut-3-yn-2-ol

6-ethynyl-4,4-dimethyl-2,3-dihydrothiochromene 1-oxide