3-Methyl-5-isoxazoleacetic acid
Also known as: 2-(3-methylisoxazol-5-yl)acetic acid, 2-(3-methyl-1,2-oxazol-5-yl)acetic acid, 5-(carboxymethyl)-3-methylisoxazole, 3-methylisoxazole-5-acetic acid, (3-methylisoxazol-5-yl)acetic acid
3-Methyl-5-isoxazoleacetic acid (CAS 19668-85-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H7NO3 and a molecular weight of 141.12500 g/mol. Key properties include a melting point of 101-104ºC(lit.), a boiling point of 306.7ºC at 760 mmHg, a density of 1.292g/cm3 and a flash point of 139.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19668-85-0
- Jingsj CID
- J-11915-3
- Molecular Formula
- C6H7NO3
- Molecular Weight
- 141.12500 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 101-104ºC(lit.) |
|---|---|
| Boiling Point | 306.7ºC at 760 mmHg |
| Density | 1.292g/cm3 |
| Flash Point | 139.3ºC |
| Exact Mass | 141.04300 |
| PSA | 63.33000 |
| LogP | 0.61010 |
| Vapor Pressure | 0.000331mmHg at 25°C |
| Refractive Index | 1.508 |
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-Methyl-5-isoxazoleacetic acid?
The CAS number of 3-Methyl-5-isoxazoleacetic acid is 19668-85-0.
What are the molecular formula and molecular weight of 3-Methyl-5-isoxazoleacetic acid?
3-Methyl-5-isoxazoleacetic acid has molecular formula C6H7NO3 and molecular weight 141.12500 g/mol.
What are the upstream and downstream products of 3-Methyl-5-isoxazoleacetic acid?
For 3-Methyl-5-isoxazoleacetic acid, Upstream Products: 3,5-Dimethylisoxazole, Carbon dioxide; Downstream Products: tert-butyl ((3-methylisoxazol-5-yl)methyl)carbamate.
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-Methyl-5-isoxazoleacetic acid (CAS 19668-85-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11915-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.