74-89-5
甲胺
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140-88-5
丙烯酸乙酯
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5336-42-5
1-甲基-4,5-二氧代-3-吡咯烷羧酸乙酯
77711-87-6
ethyl 1-methyl-5-oxo-4-(4-phenylsulfanylanilino)-2H-pyrrole-3-carboxylate