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

3-氨基-1-甲基-1H-吡唑-5(4H)-酮

Also known as: 5-amino-2-methyl-1H-pyrazol-3-one, 3-amino-1-methyl-1H-pyrazol-5(4H)-one, 3-amino-1-methyl-1H-pyrazol-5-ol, 3-amino-N-methylpyrazol-5-one, 5-amino-2-methyl-1,2-dihydro-3H-pyrazol-3-one, 3H-pyrazol-3-one, 5-amino-2,4-dihydro-2-methyl-

3-Amino-1-methyl-1H-pyrazol-5(4H)-one (CAS 54235-29-9) 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 113.11800 g/mol. It is also known as 5-amino-2-methyl-1H-pyrazol-3-one, 3-amino-1-methyl-1H-pyrazol-5(4H)-one and 3-amino-1-methyl-1H-pyrazol-5-ol. Key properties include a boiling point of 201.146ºC at 760 mmHg, a density of 1.474 g/cm3 and a flash point of 75.451ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
54235-29-9
Jingsj CID
J-1096151-3
Molecular Formula
C4H7N3O
Chinese Name
3-氨基-1-甲基-1H-吡唑-5(4H)-酮
Molecular Weight
113.11800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point201.146ºC at 760 mmHg
Density1.474 g/cm3
Flash Point75.451ºC

Frequently Asked Questions

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

The CAS number of 3-Amino-1-methyl-1H-pyrazol-5(4H)-one is 54235-29-9.

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

3-Amino-1-methyl-1H-pyrazol-5(4H)-one has molecular formula C4H7N3O and molecular weight 113.11800 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Amino-1-methyl-1H-pyrazol-5(4H)-one (CAS 54235-29-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1096151-3 (accessed 2026-10-24).

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