6-biopterin

6-Biopterin (L-Biopterin) is a natural product,is a NO synthase cofactor.

Sapropterin is a naturally occurring essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the degradation of amino acid phenylalanine and in the biosynthesis of dopamine, epinephrine, melatonin, norepinephrine, neurotransmitter

6-(L-1,2,3-Trihydroxybutyl)-pterin is a derivative of L-biopterin and represents an oxidized form of tetrahydro-L-biopterin (BH4) as well as D-biopterin. Concurrent administration of 6-(L-1,2,3-Trihydroxybutyl)-pterin (0.5%) with the carcinogen 4-dimethylaminoazobenzene can reduce the incidence of liver tumors in rats induced by 4-dimethylaminoazobenzene. Furthermore, 6-(L-1,2,3-Trihydroxybutyl)-pterin has been utilized as an internal standard for quantifying biopterin and neopterin in rat plasma using LC-MS.