(1)BENZOTHIENO(2,3-d)PYRIMIDIN-4-ONE, 5,6,7,8-TETRAHYDRO-2-METHYL-3-(2-NAPHTHYL) (1)Benzothieno(2,3-d)pyrimidin-4-one, 5,6,7,8-tetrahydro-2-methyl-3-(2-naphthyl)- 2-Methyl-3-(2-naphthyl)-4-oxo-5,6-tetramethylenethieno(2,3-d)pyrimidine 35973-87-6 BRN 0568300