上游原料
acetyl chlorideethyl 4-chloro-3-oxobutanoate；Ethyl 4-chloro-3-oxobutanoate；Ethyl 4-chloroacetoacetate4-ethylbenzenesulfonyl chloride4-ethylbenzenethiol; 4-ethylphenylhydrosulfideethyl 4-[(4-ethylphenyl)sulfanyl]-3-oxobutanoateethyl 2-(5-ethyl-1-benzothiophen-3-yl)acetate2-(5-ethyl-1-benzothiophen-3-yl)acetic acid2-(5-ethyl-1-benzothiophen-3-yl)acetamide2-(5-ethyl-1-benzothiophen-3-yl)acetonitrile2-(5-ethyl-1-benzothiophen-3-yl)ethylamine; 2-(5-ethyl-1-benzothiophen-3-yl)-1-ethanamine
