4-(N-[2,4-Diamino-6-pteridinylmethyl]amino)benzoic acid is an impurity found in methotrexate preparations. It may be used as a reference compound in methothrexate purity analysis.
4-(N-[2,4-DIAMINO-6-PTERIDINYLMETHYL]-AMINO)BENZOIC ACID SODIUM SALT Supplier