82144-25-0 Glutamic acid, N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)-2-methoxybenzoyl)-, L- L-Glutamic acid, N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)-2-methoxybenzoyl)- N-(4-(((2,4-Diamino-6-pteridinyl)methyl)methylamino)-2-methoxybenzoyl)-L-glutamic acid