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2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione

Also known as: 2,3-Dihydro-4H-pyrido[1,2-a]pyrimidin-2,4-dione, 2,3-Dihydro-2-oxo-4H-pyrido[1,2-a]pyrimidin-4-one, 2H-Pyrido[1,2-a]pyrimidine-2,4-dione, Pyrido[1,2-a]pyrimidine-2,4-dione, F1516-4482

2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione (CAS 22288-66-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6N2O2 and a molecular weight of 162.14500 g/mol. Key properties include a boiling point of 294.9ºC at 760 mmHg, a density of 1.41 and a flash point of 132.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
22288-66-0
Jingsj CID
J-1517360-1
Molecular Formula
C8H6N2O2
Molecular Weight
162.14500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point294.9ºC at 760 mmHg
Density1.41
Flash Point132.1ºC
Exact Mass162.04300
PSA51.43000
Vapor Pressure0.00158mmHg at 25°C
Refractive Index1.676

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione?

The CAS number of 2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione is 22288-66-0.

What are the molecular formula and molecular weight of 2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione?

2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione has molecular formula C8H6N2O2 and molecular weight 162.14500 g/mol.

What are the upstream and downstream products of 2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione?

For 2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione, Upstream Products: 2-Aminopyridine, Diethyl malonate, Malonic acid; Downstream Products: 2-Aminopyridine, 2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one, 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:

How to cite: Jingsj. "2H-Pyrido[1,2-a]pyrimidine-2,4(3H)-dione (CAS 22288-66-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1517360-1 (accessed 2026-11-09).

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