5-ethyl-5-(p-tolyl)-2-thiobarbituric acid

5-ethyldihydro-2-thioxo-5-(p-tolyl)pyrimidine-4,6(1H,5H)-dione

5-Ethyldihydro-5-(4-methylphenyl)-2-thioxo-4,6(1H,5H)-pyrimidinedione