L-5-Methyltetrahydrofolate

L-5-Methyltetrahydrofolate (L-5-MTHF, levomefolate) is the (6S) stereoisomer of 5-methyltetrahydrofolic acid, a reduced form of folate (vitamin B9), supplied by Nustras as a powder for nutritional use. The commercial salt form offered is stated on the specification sheet.

It is formulated into vitamin and multivitamin supplements, prenatal multivitamin products, capsules, tablets and gummies, vitamin premixes, fortified foods and beverages, and medical nutrition formulations where a reduced folate is specified instead of folic acid.

The material is a powder; CAS 31690-09-2, molecular formula C20H25N7O6 (free acid), molecular weight 459.5. Assay, isomeric purity of the (6S) form and loss on drying are standardised to specification; identity and assay are confirmed by HPLC, and heavy-metal and microbial limits are supplied to specification and confirmed on each lot's certificate of analysis. The compound is sensitive to light, oxygen and moisture and is stored sealed and protected from light.

Nustras supplies L-5-methyltetrahydrofolate in bulk commercial quantities, in sealed packaging and fibre drums, to manufacturers and formulators internationally, with a certificate of analysis, specification sheet and country-of-origin documentation on every lot. L-5-MTHF is an accepted folate source in major supplement and food markets under its listed salt forms; buyers confirm the permitted form, the folate equivalence and the permitted level for their application. Contact us for grade, pricing per kilogram and lead time.