CAS: 81-21-0 Molecular Formula: C23H27FN4O3 Molecular Weight (g/mol): 426.48 InChI Key: PMXMIIMHBWHSKN-UHFFFAOYSA-N Synonym: paliperidone,9-hydroxyrisperidone,invega,9-oh-risperidone,invega sustenna,xeplion,palliperidone,3-2-4-6-fluoro-1,2-benzisoxazol-3-yl-1-piperidinyl ethyl-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4h-pyrido 1,2-a pyrimidin-4-one,chembl1621,3-2-4-6-fluorobenzo d isoxazol-3-yl piperidin-1-yl ethyl-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4h-pyrido 1,2-a pyrimidin-4-one PubChem CID: 115237 ChEBI: CHEBI:83804 IUPAC Name: 3-[2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl]-9-hydroxy-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one SMILES: CC1=C(C(=O)N2CCCC(C2=N1)O)CCN3CCC(CC3)C4=NOC5=C4C=CC(=C5)F