33157-07-2

4a-Hydroxy-5-methyltetrahydrofolate is an impurity of Levomefolic Acid (31690-09-2), a natural, active form of folic acid used at the cellular level for DNA reproduction, the cysteine cycle and the regulation of homocysteine among other functions. It is a coenzymated form of folic acid. It has been proposed for treatment of cardiovascular disease.