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pteridine

American  
[ter-i-deen] / ˈtɛr ɪˌdin /

noun

plural

pteridines
  1. Chemistry. a bicyclic heteroaromatic organic compound with the formula C6H4N4, having two nitrogen atoms at the first and fourth positions in ring A, and the first and third positions in ring B.


pteridine Scientific  
/ tĕrĭ-dēn′ /
  1. Any of a group of organic compounds having two fused six-member rings each containing two nitrogen atoms and four carbon atoms. One of the rings is a pyrimidine, the other a pyrazine. Pteridines include folic acid and the pigments of butterfly wings.