68388-63-6 Alanine, N-(p-(((2,4-diamino-6-pteridinyl)methyl)methylamino)benzoyl)-3-phenyl-, L- BRN 1196705 L-Phenylalanine, N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)benzoyl)- N-(p-(((2,4-Diamino-6-pteridinyl)methyl)methylamino)benzoyl)-3-phenyl-L-alanine