68352-92-1 Alanine, N-(p-(((2,4-diamino-6-pteridinyl)methyl)methylamino)benzoyl)-, DL- BRN 1189571 DL-Alanine, N-(4-(((2,4-diamino-6-pteridinyl)methyl)methylamino)benzoyl)- N-(4-(((2,4-Diamino-6-pteridinyl)methyl)methylamino)benzoyl)-DL-alanine N-(p-(((2,4-Diamino-6-pteridinyl)methyl)methylamino)benzoyl)-DL-alanine