2179-16-0 9-Methylpteroylglutamic acid AIDS-028756 AIDS028756 Bremfol Folic acid, 9-methyl- L-Glutamic acid, N-[4-[[1-(2-amino-1,4-dihydro-4-oxo-6-pteridinyl)ethyl]amino]benzoyl]- NSC107137 Ninopterin Ninopterin;Bremfol