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

Also known as: 3-(2-chloroethyl)-2-methylpyrido[1,2-a]pyrimidin-4-one, 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-alpha]pyrimidin-4-one, 4H-Pyrido[1,2-a]pyrimidin-4-one, 3-(2-chloroethyl)-2-methyl-, EINECS 255-207-0, MFCD03085747

3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 41078-70-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11ClN2O and a molecular weight of 222.671 g/mol. Key properties include a melting point of 146 °C, a boiling point of 348.7±44.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 164.7±28.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 41078-70-0
Jingsj CID: J-1493565-0
Molecular Formula: C₁₁H₁₁ClN₂O
Molecular Weight: 222.671 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	146 °C
Boiling Point	348.7±44.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	164.7±28.4 °C
Exact Mass	222.055984
PSA	34.37000
LogP	1.89
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.612

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one?

The CAS number of 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one is 41078-70-0.

What are the molecular formula and molecular weight of 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one?

3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one has molecular formula C11H11ClN2O and molecular weight 222.671 g/mol.

What are the upstream and downstream products of 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one?

For 3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one, Upstream Products: 2-Aminopyridine, 2-Acetylbutyrolactone; Downstream Products: 3-(2-Chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one, Pirenperone.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "3-(2-chloroethyl)-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 41078-70-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1493565-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.