(1)BENZOTHIENO(2,3-d)PYRIMIDIN-4-ONE, 5,6,7,8-TETRAHYDRO-2-METHYL-3-(p-TOLYL)- 2-Methyl-4-oxo-3-(p-tolyl)-5,6-tetramethylenethieno(2,3-d)pyrimidine 34387-07-0 BRN 0556187