ethyl 2-(ethoxycarbonylamino)-5-methylbenzoate

2-(2-carboxy-4-methylphenyl)-5-methylbenzoic acid

1-(2-氨基-5-甲基苯基)乙酮

2-氨基-5-甲基苯-1-碳酰肼

4-甲基-1,2-苯二磺酰基二氯化物