4-Antipyrinecarboxaldehyde

4-安替比林甲醛

Also known as: Antipyraldehyde, 4-Formylantipyrine, 2,3-Dimethyl-4-formyl-1-phenyl-3-pyrazolin-5-one, 1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxaldehyde, 2,3-Dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazole-4-carboxaldehyde, 4-Formyl-2,3-dimethyl-1-phenyl-3-pyrazoline-5-one, NSC 60408, Febranine

4-Antipyrinecarboxaldehyde (CAS 950-81-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H12N2O2 and a molecular weight of 216.23600 g/mol. It is also known as Antipyraldehyde, 4-Formylantipyrine and 2,3-Dimethyl-4-formyl-1-phenyl-3-pyrazolin-5-one. Key properties include a melting point of 162-165 °C(lit.), a boiling point of 334.8ºC at 760mmHg, a density of 1.292g/cm3 and a flash point of 145.4ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
950-81-2
Jingsj CID
J-35605-9
Molecular Formula
C12H12N2O2
Chinese Name
4-安替比林甲醛
Molecular Weight
216.23600 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point162-165 °C(lit.)
Boiling Point334.8ºC at 760mmHg
Density1.292g/cm3
Flash Point145.4ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 4-Antipyrinecarboxaldehyde?

The CAS number of 4-Antipyrinecarboxaldehyde is 950-81-2.

What are the molecular formula and molecular weight of 4-Antipyrinecarboxaldehyde?

4-Antipyrinecarboxaldehyde has molecular formula C12H12N2O2 and molecular weight 216.23600 g/mol.

Is 4-Antipyrinecarboxaldehyde hazardous?

4-Antipyrinecarboxaldehyde has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "4-Antipyrinecarboxaldehyde (CAS 950-81-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35605-9 (accessed 2026-10-22).

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