5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one

5-溴-1-甲基-1,2-二氢-3H-吡唑-3-酮

5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 1781644-04-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5BrN2O and a molecular weight of 177.00 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1781644-04-9
Jingsj CID
J-187419-0
Molecular Formula
C4H5BrN2O
Chinese Name
5-溴-1-甲基-1,2-二氢-3H-吡唑-3-酮
Molecular Weight
177.00 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Frequently Asked Questions

What is the CAS number of 5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one?

The CAS number of 5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one is 1781644-04-9.

What are the molecular formula and molecular weight of 5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one?

5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one has molecular formula C4H5BrN2O and molecular weight 177.00 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Bromo-1-methyl-1,2-dihydro-3H-pyrazol-3-one (CAS 1781644-04-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-187419-0 (accessed 2026-10-24).

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