3-Methyl-4-isoxazolecarboxylic acid
- CAS NO.：17153-20-7
- Empirical Formula: C5H5NO3
- Molecular Weight: 127.1
- MDL number: MFCD01318161
- EINECS: 681-430-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 04:59:56
What is 3-Methyl-4-isoxazolecarboxylic acid?
Chemical properties
white to light yellow crystal powder
The Uses of 3-Methyl-4-isoxazolecarboxylic acid
An impurity in Leflunomide (L322750).
Properties of 3-Methyl-4-isoxazolecarboxylic acid
| Melting point: | 185-187°C |
| Boiling point: | 303.6±22.0 °C(Predicted) |
| Density | 1.348±0.06 g/cm3(Predicted) |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| solubility | DMSO (Slightly) |
| form | Solid |
| pka | 2.90±0.25(Predicted) |
| color | Brown |
| BRN | 114157 |
| CAS DataBase Reference | 17153-20-7(CAS DataBase Reference) |
Safety information for 3-Methyl-4-isoxazolecarboxylic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 3-Methyl-4-isoxazolecarboxylic acid
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