Abstract:boiling alcohol or boiling ethyl acetate, the extracts combined, concentrated, and the concentrated solution allowed to cool. Pale, reddish-brown needles of the aminoquinazoline separated, in poor yield. Calculated for C,H,ON, : N, 24.0. Found : N, 24.0. This aminoquinazoline melts with decomposition at 295-3 10'. It slowly darkens in the light. It is moderately soluble in alcohol, acetone or ethyl acetate, when boiling, less so when cold, and is practically insoluble in cold water, benzene or ether. In dilute… Show more
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