1 29C N-(4-{[(2-amino-4-oxo-3,4-dihydropteridin-6-yl)methyl]amino}benzoyl)-L-gamma-glutamyl-L-gamma-glutamyl-L-glutamic acid 1.000 2 39S N-[4-({[(6s)-2-amino-4-oxo-3,4,5,6,7,8-hexahydropteridin-6-yl]methyl}amino)benzoyl]-L-gamma-glutamyl-L-gamma-glutamyl-L-glutamic acid 1.000 3 TGF 2-[4-(4-{4-[(2-amino-5-formyl-4-oxo-3,4,5,6,7,8-hexahydro-pteridin-6-ylmethyl)-amino]-benzoylamino}-4-carboxy-butyrylamino)-4-carboxy-butyrylamino]-pentanedioic acid 0.962 4 29D N-(4-{[(2-amino-4-oxo-3,4-dihydropteridin-6-yl)methyl]amino}benzoyl)-L-gamma-glutamyl-L-gamma-glutamyl-L-gamma-glutamyl-L-glutamic acid 0.817 5 28Z N-(4-{[(2-amino-4-oxo-3,4-dihydropteridin-6-yl)methyl]amino}benzoyl)-L-gamma-glutamyl-L-glutamic acid 0.784 6 TLL N-[4-({[(6s)-2-amino-5-methyl-4-oxo-1,4,5,6,7,8-hexahydropteridin-6-yl]methyl}amino)benzoyl]-L-gamma-glutamyl-L-glutamic acid 0.769