methyl 4-<1-<(2,4-diamino-6-pteridinyl)methyl>propyl>benzoate

methyl 4-[2-(2,4-diamino-6-pteridinyl)-1-ethylethenyl]benzoate

4-(1-(2,4-diamino-7,8-dihydropteridin-6-yl)butan-2-yl)benzoic acid

1-amino-4-ethyl-4-(p-catbomethoxyphenyl)-2-butanone oxime

4-(p-carbomethoxyphenyl)-1-phthalimido-3-buten-2-one