2-(2,5-二氧代-2,5-二氢-吡咯-1-基)-丙酸

5-methyl-3-(2-methylphenyl)-2-sulfanylideneimidazolidin-4-one

2-(ethoxycarbonylamino)propanoic acid

2-(benzylsulfanylcarbothioylamino)propanoic acid

N-(3-nitrophenyl)hydroxylamine