4-Antipyrinecarboxaldehyde
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. 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. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 950-81-2
- Jingsj CID
- J-35605-8
- Molecular Formula
- C12H12N2O2
- Molecular Weight
- 216.23600 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 162-165 °C(lit.) |
|---|---|
| Boiling Point | 334.8ºC at 760mmHg |
| Density | 1.292g/cm3 |
| Flash Point | 145.4ºC |
| Exact Mass | 216.09000 |
| PSA | 44.00000 |
| LogP | 1.29690 |
| Refractive Index | 1.651 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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 and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem 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-35605-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.