at neutral ph , competition for binding with [ 3h ] folic acid required 1.45 equivalents of pteroylheptaglutamate , 6.25 equivalents of n5-methyltetrathydrofolate , 29 equivalents of methotrexate , and 125 equivalents of n5-formyltetrahydrofolate .
C0016410
folic acid
C0025677
methotrexate