4-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one

4-(甲氧亚氨基)-3-甲基-1H-吡唑-5(4H)-酮

Also known as: 1H-Pyrazole-4,5-dione, 3-methyl-, 4-(O-methyloxime), (4Z)-

4-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one (CAS 406938-87-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7N3O2 and a molecular weight of 141.13 g/mol. It is also known as 1H-Pyrazole-4,5-dione, 3-methyl-, 4-(O-methyloxime), (4Z)-. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 406938-87-2
Jingsj CID: J-299542-1
Molecular Formula: C₅H₇N₃O₂
Chinese Name: 4-(甲氧亚氨基)-3-甲基-1H-吡唑-5(4H)-酮
Molecular Weight: 141.13 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 4-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one?

The CAS number of 4-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one is 406938-87-2.

What are the molecular formula and molecular weight of 4-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one?

4-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one has molecular formula C5H7N3O2 and molecular weight 141.13 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-(Methoxyimino)-3-methyl-1H-pyrazol-5(4H)-one (CAS 406938-87-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-299542-1 (accessed 2026-10-24).

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