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

The nine-membered fused-ring of the title compound, C(10)H(13)N(5)O(2), is approximately planar [maximum deviation = 0.012 (1) Å]; the bond angle at the methylene C atom is 111.33 (10)°.

Estimation of annual Mn emissions from MMT source in the Canadian environment and the Mn pollution index in each province.

Methylcyclopentadienyl manganese tricarbonyl (MMT), is an organic derivative of Mn used as an anti-knock agent in Canadian unleaded gasoline since 1976. This study aims to estimate Mn emissions from MMT source in the Canadian environment as well as the Mn pollution index per capita in each of the Canadian provinces. In concomitance, lead emissions will also be addressed.