Neopterin

**Definition:** A pteridine derivative present in body fluids; elevated levels result from immune system activation, malignant disease, allograft rejection, and viral infections. (From Stedman, 26th ed) Neopterin also serves as a precursor in the biosynthesis of BIOPTERINS.

**Tree numbers:** - D03.633.100.733.631.202.500 - D08.211.090.500

**Synonyms:** - 2-Amino-6-(1,2,3-trihydroxypropyl)-4(3H)-pteridinone