Hydrogen-bonding patterns in 2-amino-4,6-dimethyl­pyrimidine–cinnamic acid (1/2)

In the title compound, C₆H₉N₃·2C₉H₈O₂, an amino­pyrimidine–cinnamic acid 1:2 cocrystal, the 2-amino-4,6-dimethyl­pyrimidine mol­ecule forms two eight-membered hydrogen-bonded rings [R₂²(8) motif] with the carboxylic acid groups from two independent cinnamic acid mol­ecules via N—H...O and O—H...N hydrogen bonds. The cinnamic acid mol­ecules are linked by C—H...O hydrogen bonds to form chains along two axes.