3-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]propane-1-sulfonic acid

甲氨蝶呤

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

5-(benzylamino)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]-5-oxopentanoic acid

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