Oxyphenbutazone
Also known as: 4-Butyl-1-(4-hydroxyphenyl)-2-phenyl-3,5-pyrazolidinedione, 1-(p-Hydroxyphenyl)-2-phenyl-4-butyl-3,5-pyrazolidinedione, 1-Phenyl-2-(p-hydroxyphenyl)-3,5-dioxo-4-butylpyrazolidine, p-Oxyphenylbutazone, G 27202, Tanderil, Oxazolidin
Oxyphenbutazone (CAS 129-20-4) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C19H20N2O3 and a molecular weight of 324.37400 g/mol. Key properties include a melting point of 109-111°C, a boiling point of 485.6ºC at 760mmHg, a density of 1.241g/cm3 and a flash point of 247.5ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 129-20-4
- Jingsj CID
- J-30236-3
- Molecular Formula
- C19H20N2O3
- Molecular Weight
- 324.37400 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 109-111°C |
|---|---|
| Boiling Point | 485.6ºC at 760mmHg |
| Density | 1.241g/cm3 |
| Flash Point | 247.5ºC |
| Exact Mass | 324.14700 |
| PSA | 60.85000 |
| LogP | 3.62340 |
| Vapor Pressure | 4.7E-10mmHg at 25°C |
| Refractive Index | 1.61 |
| Storage Conditions | Hygroscopic, -20°C Freezer, Under Inert Atmosphere |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H400 — Very toxic to aquatic life
Activity & Biological Data
| Target | COX[1] |
|---|---|
| Additional Information | [1]. Saleem S, et al. Oxyphenbutazone promotes cytotoxicity in rats and Hep3B cellsvia suppression of PGE2 and deactivation of Wnt/β-catenin signaling pathway. Mol Cell Biochem. 2018 Jul;444(1-2):187-196. [2]. Gold B, et al. Nonsteroidal anti-inflammatory drug sensitizes Mycobacterium tuberculosis to endogenous and exogenous antimicrobials. Proc Natl Acad Sci U S A. 2012 Oct 2;109(40):16004-11. |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 Oxyphenbutazone?
The CAS number of Oxyphenbutazone is 129-20-4.
What are the molecular formula and molecular weight of Oxyphenbutazone?
Oxyphenbutazone has molecular formula C19H20N2O3 and molecular weight 324.37400 g/mol.
Is Oxyphenbutazone hazardous?
Oxyphenbutazone has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H400 — Very toxic to aquatic life.
What are the upstream and downstream products of Oxyphenbutazone?
For Oxyphenbutazone, Upstream Products: Diethyl 2-butylmalonate, 1-Butanol, Phenylbutazone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Oxyphenbutazone (CAS 129-20-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30236-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.