4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one

4-氨基-3-甲基-4,5-二氢-1H-吡唑-5-酮

4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 5256-90-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H7N3O and a molecular weight of 113.12 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5256-90-6
Jingsj CID: J-500875-5
Molecular Formula: C₄H₇N₃O
Chinese Name: 4-氨基-3-甲基-4,5-二氢-1H-吡唑-5-酮
Molecular Weight: 113.12 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one?

The CAS number of 4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one is 5256-90-6.

What are the molecular formula and molecular weight of 4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one?

4-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one has molecular formula C4H7N3O and molecular weight 113.12 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-Amino-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 5256-90-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-500875-5 (accessed 2026-10-24).

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