6,7-Dimethylpterin is a pteridine that has been found in A549 cells, as well as human urine.1,2
1.Burton, C., Weng, R., Yang, L., et al.High-throughput intracellular pteridinic profiling by liquid chromatography-quadrupole time-of-flight mass spectrometryAnal. Chim. Acta.853442-450(2015) 2.Gamagedara, S., Gibbons, S., and Ma, Y.Investigation of urinary pteridine levels as potential biomarkers for noninvasive diagnosis of cancerClin. Chim. Acta.412(1-2)120-128(2011)
















