tert-butyl 4-[(2,4-diaminopteridin-6-yl)ethyl]benzoate

4-[2-(2,4-Diamino-7,8-dihydro-pteridin-6-yl)-ethyl]-benzoic acid

tert-butyl 4-[(2,4-diaminopteridin-6-yl)ethynyl]benzoate

2,4,5,6-四氨基嘧啶

4-(3-bromo-4-oxobutyl)benzoic acid