Oncopterin is found in urine from patients with solid and blood cancers. References: Hibiya M, Teradaira R, Shimpo K, Matsui T, Sugimoto T, Nagatsu T. Interference of a methotrexate derivative with urinary oncopterin [N2-(3-aminopropyl)biopterin] measurement by high-performance liquid chromatography with fluorimetric detection. J Chromatogr B Biomed Sci Appl. 1997 Mar 28;691(1):223-7. PubMed PMID: 9140780.

纯度：≥98%

CAS：143460-23-5