2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one

Also known as: 2-Chloropyrido[1,2-a]pyrimidin-4-one, 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one, 4H-Pyrido[1,2-a]pyrimidin-4-one, 2-chloro-, 2-Chloro-4H-pyrido[1,2-A]pyrimidin-4-one

2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 5418-94-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H5ClN2O and a molecular weight of 180.59100 g/mol. Key properties include a boiling point of 287ºC at 760mmHg, a density of 1.42g/cm3 and a flash point of 127.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5418-94-0
Jingsj CID: J-1512969-8
Molecular Formula: C₈H₅ClN₂O
Molecular Weight: 180.59100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	287ºC at 760mmHg
Density	1.42g/cm3
Flash Point	127.3ºC
Exact Mass	180.00900
PSA	34.37000
LogP	1.34790
Refractive Index	1.662

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 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one?

The CAS number of 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one is 5418-94-0.

What are the molecular formula and molecular weight of 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one?

2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one has molecular formula C8H5ClN2O and molecular weight 180.59100 g/mol.

What are the upstream and downstream products of 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one?

For 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one, Upstream Products: 2-Hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one, 2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione, 2-Aminopyridine; Downstream Products: 2-Phenyl-4H-pyrido[1,2-a]pyrimidin-4-one, 4-Oxo-2-piperidin-1-yl-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde, 2-Chloro-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde.

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. "2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one (CAS 5418-94-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1512969-8 (accessed 2026-11-09).

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