pteramina(czech)[qr] ;Methotrexate Related CoMpound B;Methotrexate Related Compound B (75 mg) ((S)-2-{4-[2,4-diaminopteridin-6yl)methylamino]benzoamido}pentanedioic acid);Minopterin;Methotrexate EP IMpurity B;(S)-2-(4-(((2,4-diaMinopteridin-6-yl)Methyl)aMino)benzaMido)pentanedioic acid;Methotrexate IMpurity B;AGPA