叔丁基二甲基氯硅烷

2-溴苯甲酰氯

四氢吡喃-4-甲酸乙酯

4-(hydroxymethyl)tetrahydropyran-4-carboxylic acid ethyl ester

17α-ethynyl-9α,17β-dihydroxy-3-methoxy-16β-methylandrosta-3,5-diene 9-methylcarbonate