3,3-dimethyl-1,1-bis(tosyloxy)-1-butene

S-(4-甲基苯基)苯硫代甲酸酯

cyclobutylmethanol,4-methylbenzenesulfonic acid

toluene-4-sulphonic acid cyclopentylmethyl ester

(1-Phenylcyclopentyl)carbinyl tosylate