英文别名4H-Pyrido[1,2-a]pyrimidin-4-one, 3-ethyl-6,7,8,9-tetrahydro-9-hydroxy-2-Methyl-; 3-ethyl-9-hydroxy-2-Methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one; Paliperidone Stage III (USP RC A); Paliperidone Related Compound A; 3-ethyl-9-hydroxy-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one; 3-ethyl-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrrido[1,2-a]-pyrimidin-4-one 
