2-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one

2-(2-甲基苯基)-4H,5H-吡唑并[1,5-a]吡嗪-4-酮

Also known as: Pyrazolo[1,5-a]pyrazin-4(5H)-one, 2-(2-methylphenyl)-

2-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one (CAS 1338664-59-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H11N3O and a molecular weight of 225.25 g/mol. It is also known as Pyrazolo[1,5-a]pyrazin-4(5H)-one, 2-(2-methylphenyl)-. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1338664-59-7
Jingsj CID: J-1578429-6
Molecular Formula: C₁₃H₁₁N₃O
Chinese Name: 2-(2-甲基苯基)-4H,5H-吡唑并[1,5-a]吡嗪-4-酮
Molecular Weight: 225.25 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 2-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one?

The CAS number of 2-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one is 1338664-59-7.

What are the molecular formula and molecular weight of 2-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one?

2-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one has molecular formula C13H11N3O and molecular weight 225.25 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-(2-methylphenyl)-4H,5H-pyrazolo[1,5-a]pyrazin-4-one (CAS 1338664-59-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1578429-6 (accessed 2026-10-25).

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