(S)-5-((4-(2-((2-((tert-butoxycarbonyl)amino)ethyl)amino)-2-oxoethoxy)-5-methoxy-2-nitrobenzyl)oxy)-2-(4-(((2,4-diaminopteridin-6-yl)methyl)(methyl)amino)benzamido)-5-oxopentanoic acid

6-甲基-2,4-蝶啶二胺

(S)-2-(4-{[4-Amino-2-((S)-2-tert-butoxycarbonylamino-propionylamino)-pteridin-6-ylmethyl]-methyl-amino}-benzoylamino)-pentanedioic acid di-tert-butyl ester

di-t-butyl ester of 2-(t-BOC-L-leucyl)methotrexate

di-tert-butyl (4-(((2,4-bis((S)-2-((tert-butoxycarbonyl)amino)propanamido)pteridin-6-yl)methyl)(methyl)amino)benzoyl)-L-glutamate