[Tetrahydrofolates which are substituted by a formyl group at either the nitrogen atom in the 5 position or the nitrogen atom in the 10 position. N(5)-Formyltetrahydrofolate is leukovorin (citrovorum factor) while N(10)-formyltetrahydrofolate is an active coenzyme which functions as a carrier of the formyl group in a number of enzymatic reactions. ( MSH )]
UMLS (CSP) C0016598 Relation/PAR: Tetrahydrofolates
Relation/CHD: 5-Formyl-5,6,7,8-tetrahydrofolic Acid