Synonyms: 7-Benzyl-4-chloro-5,6,7,8-tetrahydro-2-(methylthio)pyrido[3,4-d]pyrimidine;7-benzyl-4-chloro-2-methylsulfanyl-6,8-dihydro-5H-pyrido[3,4-d]pyrimidine;pyrido[3,4-d]pyrimidine, 4-chloro-5,6,7,8-tetrahydro-2-(methylthio)-7-(phenylmethyl)-;7-Benzyl-4-chloro-2-(methylthio)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine;