neopterin

D-(+)-Neopterin (D-(+)-Neopterin) is produced by human monocytes/macrophages upon stimulation with the cytokine interferon-γ. In humans, neopterin is involved in purine biosynthesis.

Neopterin, L-erythro- can be used as a cholinergic receptor.

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.