52196-22-2 52386-42-2 Emofolin sodium Homofolic acid, 5,6,7,8-tetrahydro-5-methyl-, disodium salt L-Glutamic acid, N-(4-((2-(2-amino-1,4,5,6,7,8-hexahydro-5-methyl-4-oxo-6-pteridinyl)ethyl)amino)benzoyl)-, disodium salt MeTHHF disodium NSC 139490