3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid
Also known as: 3-(2,6-dichlorophenyl)-5-methyl-4-isoxazolecarboxylic acid, 5-methyl-3-(2,6-dichlorophenyl)isoxazole-4-carboxylic acid, 3-(2,6-dichlorophenyl)-5-methyl-1,2-oxazole-4-carboxylic acid, dicloxacillin EP impurity D, MFCD00051658
3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 3919-76-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H7Cl2NO3 and a molecular weight of 272.084 g/mol. Key properties include a melting point of 221 °C, a boiling point of 383.6±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 185.8±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3919-76-4
- Jingsj CID
- J-1589662-5
- Molecular Formula
- C11H7Cl2NO3
- Molecular Weight
- 272.084 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 221 °C |
|---|---|
| Boiling Point | 383.6±37.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 185.8±26.5 °C |
| Exact Mass | 270.980286 |
| PSA | 63.33000 |
| LogP | 2.13 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.600 |
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. 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 3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid?
The CAS number of 3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid is 3919-76-4.
What are the molecular formula and molecular weight of 3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid?
3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid has molecular formula C11H7Cl2NO3 and molecular weight 272.084 g/mol.
What are the upstream and downstream products of 3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid?
For 3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid, Upstream Products: 2,6-Dichlorobenzaldehyde, Methyl acetoacetate, Ethyl 3-(2,6-dichlorophenyl)-5-methylisoxazole-4-carboxylate; Downstream Products: 3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carbonyl chloride, Dicloxacillin sodium, 4-Chloromethyl-3-(2,6-dichlorophenyl)-5-methylisoxazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxylic acid (CAS 3919-76-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1589662-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.