3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

3-(2-氯乙基)-9-羟基-2-甲基-4H-吡啶并[1,2-a]嘧啶-4-酮

Also known as: 3-(2-Chloroethyl)-2-methyl-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one (Paliperidone), 3-(2-Chloroethyl)-2-methyl-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one, 4H-Pyrido[1,2-a]pyrimidin-4-one, 3-(2-chloroethyl)-9-hydroxy-2-methyl-, 9-Hydroxy-3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one, MFCD11110969

3-(2-Chloroethyl)-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 260273-82-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11ClN2O2 and a molecular weight of 238.670 g/mol. It is also known as 3-(2-Chloroethyl)-2-methyl-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one (Paliperidone), 3-(2-Chloroethyl)-2-methyl-9-hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one and 4H-Pyrido[1,2-a]pyrimidin-4-one, 3-(2-chloroethyl)-9-hydroxy-2-methyl-. Key properties include a boiling point of 413.1±55.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 203.6±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

260273-82-3

Jingsj CID

J-1605007-9

Molecular Formula

C₁₁H₁₁ClN₂O₂

Chinese Name

3-(2-氯乙基)-9-羟基-2-甲基-4H-吡啶并[1,2-a]嘧啶-4-酮

Molecular Weight

238.670 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026