4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone

4-羟基-1-甲基-3-(5-氧代-2,5-二氢-1H-吡唑-3-基)-2(1H)-喹啉酮

4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone (CAS 166520-35-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H11N3O3 and a molecular weight of 257.24 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 166520-35-0
Jingsj CID: J-490594-1
Molecular Formula: C₁₃H₁₁N₃O₃
Chinese Name: 4-羟基-1-甲基-3-(5-氧代-2,5-二氢-1H-吡唑-3-基)-2(1H)-喹啉酮
Molecular Weight: 257.24 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone?

The CAS number of 4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone is 166520-35-0.

What are the molecular formula and molecular weight of 4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone?

4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone has molecular formula C13H11N3O3 and molecular weight 257.24 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. "4-hydroxy-1-methyl-3-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)-2(1H)-quinolinone (CAS 166520-35-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-490594-1 (accessed 2026-10-25).

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