4-Aminoantipyrine
Also known as: Ampyrone, 4-Amino-1,5-dimethyl-2-phenyl-3-pyrazolone, 4-Amino-2,3-dimethyl-1-phenyl-5-pyrazolone, 4-Aminophenazone, 4-Amino-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one, 4-Amino-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one, Metamizole EP Impurity B, Metamizole Sodium Impurity 2, EINECS 201-452-3, MFCD00003145
4-Aminoantipyrine (CAS 83-07-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H13N3O and a molecular weight of 203.240 g/mol. Key properties include a melting point of 105-110 °C(lit.), a boiling point of 309.0±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 140.7±28.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 83-07-8
- Jingsj CID
- J-810358-0
- Molecular Formula
- C11H13N3O
- Molecular Weight
- 203.240 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 105-110 °C(lit.) |
|---|---|
| Boiling Point | 309.0±45.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 140.7±28.7 °C |
| Exact Mass | 203.105865 |
| PSA | 52.95000 |
| LogP | -0.40 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.607 |
| Additional Property | ca. 500 g/L (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Activity & Biological Data
| Target | COX |
|---|---|
| Additional Information | [1]. Berno CR, et al. 4-Aminoantipyrine reduces toxic and genotoxic effects of doxorubicin, cisplatin, and cyclophosphamide in male mice. Mutat Res Genet Toxicol Environ Mutagen. 2016 Jul;805:19-24. |
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-Aminoantipyrine?
The CAS number of 4-Aminoantipyrine is 83-07-8.
What are the molecular formula and molecular weight of 4-Aminoantipyrine?
4-Aminoantipyrine has molecular formula C11H13N3O and molecular weight 203.240 g/mol.
Which suppliers offer 4-Aminoantipyrine?
1 supplier(s) listed; request a quote for pricing.
Is 4-Aminoantipyrine hazardous?
4-Aminoantipyrine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 4-Aminoantipyrine?
For 4-Aminoantipyrine, Upstream Products: Antipyrine, Aminopyrine, Metamizole sodium; Downstream Products: 2-Chloro-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)acetamide, Ramifenazone, Nifenazone.
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-Aminoantipyrine (CAS 83-07-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-810358-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.