2-(2-Ethoxyphenyl)-6,7-dimethyl-8H-(1,3,4)thiadiazolo(3,2-a)thieno(2,3-d)pyrimidin-8-one 88753-98-4 8H-(1,3,4)Thiadiazolo(3,2-a)thieno(2,3-d)pyrimidin-8-one, 2-(2-ethoxyphenyl)-6,7-dimethyl-