3-amino-1H-pyrazol-5-ol

3-氨基-5-吡唑醇

Also known as: 5-amino-1H-pyrazol-3-ol, 3-Amino-5-pyrazolone, 3-Amino-3-pyrazolin-5-one, 5-Amino-1,2-dihydro-3H-pyrazol-3-one, 1H-Pyrazol-5-ol, 3-amino-, NSC 60188

3-amino-1H-pyrazol-5-ol (CAS 53666-79-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C3H5N3O and a molecular weight of 99.091 g/mol. It is also known as 5-amino-1H-pyrazol-3-ol, 3-Amino-5-pyrazolone and 3-Amino-3-pyrazolin-5-one. Key properties include a boiling point of 479.5±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 243.8±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
53666-79-8
Jingsj CID
J-1398805-4
Molecular Formula
C3H5N3O
Chinese Name
3-氨基-5-吡唑醇
Molecular Weight
99.091 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point479.5±25.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point243.8±23.2 °C

Frequently Asked Questions

What is the CAS number of 3-amino-1H-pyrazol-5-ol?

The CAS number of 3-amino-1H-pyrazol-5-ol is 53666-79-8.

What are the molecular formula and molecular weight of 3-amino-1H-pyrazol-5-ol?

3-amino-1H-pyrazol-5-ol has molecular formula C3H5N3O and molecular weight 99.091 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-1H-pyrazol-5-ol (CAS 53666-79-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1398805-4 (accessed 2026-10-25).

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