Ethyl 2-(2-amino-5-methyl-1,2,4-triazolo-[1,5-a]pyrimidin-7-yl)acetate

Abstract

The nine-membered fused-ring of the title compound, C 10H 13N 5O 2, is approximately planar [maximum deviation = 0.012(1) Å]; the bond angle at the methylene C atom is 111.33(10)°. In the crystal, the amino group forms hydrogen bonds to the N atoms of the triazole rings of adjacent molecules, generating a ribbon running along the a axis.