N-benzyl-N-[(4-nitrophenyl)methyl]hydroxylamine

7-羟基苯并二氢吡喃-2-酮

ethyl 3-(2,4-dihydroxyphenyl)propionate

ethyl 7-(carbamoylamino)heptanoate

乙基5-氯-2-甲基苯甲酸酯