10-Formyltetrahydrofolate 10-Fthf 10-formyltetrahydropteroylglutamic acid 18656-95-6 2800-34-2 L-Glutamic acid, N-(4-(((2-amino-1,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl)methyl)formylamino)benzoyl)-