英文别名Paliperidone Impurity 11; 3-(2-chloroethyl)-2-Methyl-9-hydroxy-4H-pyrido[1,2-a]pyrimidine-4-one; 9-Hydroxy-3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one; 3-(2-Chloroethyl)-2-methyl-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one; Paliperidone-1; Paliperidone impurity 17; 3-(2-chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidine-4-one; 3-(2-chloroethyl)-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidine-4-one 
