121-60-8
对乙酰胺基苯磺酰氯
→
682341-20-4
ethyl 4-(4-aminophenyl)sulfonylpiperazine-1-carboxylate
120-43-4
N-哌嗪甲酸乙酯
349128-16-1
4-(N-acetyl-sulfanilyl)-piperazine-1-carboxylic acid ethyl ester