[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid

[(2,3-二氢-1,5-二甲基-3-氧代-2-苯基-1H-吡唑-4-基)氨基]甲磺酸

Also known as: Sulfamidopyrine, Metamizole impurity E, Melubrin, 4-N-desmethylmetamizole, ((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)methanesulfonic acid, Melaminsulfone

[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid (CAS 117-38-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H15N3O4S and a molecular weight of 297.336 g/mol. It is also known as Sulfamidopyrine, Metamizole impurity E and Melubrin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
117-38-4
Jingsj CID
J-51072-5
Molecular Formula
C12H15N3O4S
Chinese Name
[(2,3-二氢-1,5-二甲基-3-氧代-2-苯基-1H-吡唑-4-基)氨基]甲磺酸
Molecular Weight
297.336 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Frequently Asked Questions

What is the CAS number of [(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid?

The CAS number of [(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid is 117-38-4.

What are the molecular formula and molecular weight of [(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid?

[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid has molecular formula C12H15N3O4S and molecular weight 297.336 g/mol.

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

Last updated:

How to cite: Jingsj. "[(2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)amino]methanesulfonic acid (CAS 117-38-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-51072-5 (accessed 2026-10-24).

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