Methyl 5-Cyanomethyl-2-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1,2,3-triazole-4-carboxylate

1,3-丙酮二羧酸二甲酯

dimethyl 3-[(2,4-dinitrophenyl)hydrazinylidene]pentanedioate

Methyl 5-Methoxycarbonylmethyl-1-(2,4-dinitroanilino)-1,2,3-triazole-4-carboxylate

Methyl 4(5)Methoxycarbonylmethyl-1,2,3-triazole-5(4)carboxylate