2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one

2,3,7-三甲基吡唑并[1,5-a]嘧啶-5(4H)-酮

Also known as: 2,3,7-Trimethylpyrazolo[1,5-a]pyrimidin-5(4H)-one, Pyrazolo[1,5-a]pyrimidin-5(4H)-one, 2,3,7-trimethyl-, 2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one

2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one (CAS 1565505-51-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H11N3O and a molecular weight of 177.20 g/mol. It is also known as 2,3,7-Trimethylpyrazolo[1,5-a]pyrimidin-5(4H)-one, Pyrazolo[1,5-a]pyrimidin-5(4H)-one, 2,3,7-trimethyl- and 2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-a]pyrimidin-5-one. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1565505-51-2
Jingsj CID: J-1914567-3
Molecular Formula: C₉H₁₁N₃O
Chinese Name: 2,3,7-三甲基吡唑并[1,5-a]嘧啶-5(4H)-酮
Molecular Weight: 177.20 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one?

The CAS number of 2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one is 1565505-51-2.

What are the molecular formula and molecular weight of 2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one?

2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one has molecular formula C9H11N3O and molecular weight 177.20 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "2,3,7-Trimethyl-4H,5H-pyrazolo[1,5-A]pyrimidin-5-one (CAS 1565505-51-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1914567-3 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.