Methotrexate EP Impurity E ;
Methotrexate USP RC E (HCl Salt) ;
2,4-Diamino-N10-methylpterioc acid hemihydrochloride salt ;
4-[[(2,4-Diaminopteridin-6-yl)methyl]methyl amino]benzoic acid hemihydrochloride salt ;
CAS # 70844-48-3 (hemihydrochloride salt) ;
C15H15N7O2.1/2HCl ;
MW: 343.56 ;