甲氨蝶呤-gamma-甲基酰胺

ethyl 2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-4-diethoxyphosphorylbutanoate

2-[[4-carboxy-4-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]butanoyl]amino]pentanedioic acid