5,6,7,8-hexahydro-2-thioxo-(1)benzothieno(2,3-d)pyrimidin-4(1h)-3-ethyl-3

(1)benzothieno(2,3-d)pyrimidin-4(1h)-one,2,3,5,6,7,8-hexahydro-3-ethyl-2-thiox

3-Ethyl-2,3,5,6,7,8-hexahydro-2-thioxo-(1)benzothieno(2,3-D)pyrimidin-4(1H)-one

(1)Benzothieno(2,3-D)pyrimidin-4(1H)-one, 2,3,5,6,7,8-hexahydro-3-ethyl-2-thioxo-