5623-18-7

Metfol-B NSC 408937 Methotrexate-EP-Imp-D N10-Methyl Pteroic Acid Methotrexate EP Impurity D Methotrexate Impurity 4(EP-D) Methotrexate Impurity 4（Methotrexate EP Impurity D） Methotrexate EP Impurity D（Amethopterin EP Impurity D） 4-{[(2-Amino-4-hydroxypteridin-6-yl)methyl]methylamino}benzoic acid p-[(2-Amino-4-hydroxy-6-pteridinyl)methyl(methyl)amino]benzoic acid 4-[Methyl[(2-amino-4-hydroxypteridine)-6-ylmethyl]amino]benzoic acid 4-[[(2-AMino-3,4-dihydro-4-oxo-6-pteridinyl)Methyl]MethylaMino]benzoic Acid 4-{[(2-amino-4-oxo-1,4-dihydropteridin-6-yl)methyl](methyl)amino}benzoic acid Benzoic acid, 4-[[(2-amino-3,4-dihydro-4-oxo-6-pteridinyl)methyl]methylamino]- Methotrexate EP Impurity D/N10-Methylpteroic acid/4-(((2-amino-4-oxo-1,4-dihydropteridin-6-yl)methyl)(methyl)amino)benzoic acid