4-amino-3-(4-methanesulfonyl-phenyl)-isoxazole-5-carboxylic acid ethyl ester

1-(4-methylsulfonylphenyl)-2-nitroethanone

3-(4-methanesulfonyl-phenyl)-4-nitro-isoxazole-5-carboxylic acid ethyl ester

N-[1-(4-methylsulfonylphenyl)-2-nitroethylidene]hydroxylamine

4-(甲基磺酰基)苯甲酰氯