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

3-氨基-4-苯基-4,5-二氢-1H-吡唑-5-酮

Also known as: 3-Amino-4-phenyl-2-pyrazolin-5-one, 3-Amino-4-phenyl-1H-pyrazol-5(4H)-one, 4-Phenyl-3-amino-2-pyrazolin-5-one

3-Amino-4-phenyl-4,5-dihydro-1H-pyrazol-5-one (CAS 103755-48-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H9N3O and a molecular weight of 175.19 g/mol. It is also known as 3-Amino-4-phenyl-2-pyrazolin-5-one, 3-Amino-4-phenyl-1H-pyrazol-5(4H)-one and 4-Phenyl-3-amino-2-pyrazolin-5-one. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 103755-48-2
Jingsj CID: J-1406891-9
Molecular Formula: C₉H₉N₃O
Chinese Name: 3-氨基-4-苯基-4,5-二氢-1H-吡唑-5-酮
Molecular Weight: 175.19 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Frequently Asked Questions

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

The CAS number of 3-Amino-4-phenyl-4,5-dihydro-1H-pyrazol-5-one is 103755-48-2.

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

3-Amino-4-phenyl-4,5-dihydro-1H-pyrazol-5-one has molecular formula C9H9N3O and molecular weight 175.19 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. "3-Amino-4-phenyl-4,5-dihydro-1H-pyrazol-5-one (CAS 103755-48-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1406891-9 (accessed 2026-10-24).

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