ISOXAZOLE-5-CARBOXYLIC ACID
- CAS NO.：21169-71-1
- Empirical Formula: C4H3NO3
- Molecular Weight: 113.07
- MDL number: MFCD00156151
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:14:36
What is ISOXAZOLE-5-CARBOXYLIC ACID?
Chemical properties
slightly yellow powder
The Uses of ISOXAZOLE-5-CARBOXYLIC ACID
Reaction conditions were found to allow the exclusive formation of isoxazole-5-carboxylic acid derivatives by conjugate addition, in acidic medium, of hydroxylamine to β-alkoxyvinyl trichloromethyl ketone in synthesis and reactivity of isoxazoles. Isoxazole-5-carboxylic acid participates in the Synthesis and evaluation of acylguanidine FXa inhibitors. 1, 1, 1-trichloro-4-methoxy-3-penten-2-one postulated in the preparation of isoxazole-5-carboxylic acid from trichloroacetyl chloride, ethyl vinyl ether and hydroxylamine is developed in a fully saturated nitrogen atom theerefore there is no possibility of conjugation with 4- substituents.
General Description
Isoxazole-5-carboxylic acid can be obtained via dehydration of 5-trichloromethylisoxazole.
Properties of ISOXAZOLE-5-CARBOXYLIC ACID
| Melting point: | 144-148 °C(lit.) |
| Boiling point: | 211.74°C (rough estimate) |
| Density | 1.5808 (rough estimate) |
| refractive index | 1.4543 (estimate) |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| pka | 2.29±0.10(Predicted) |
| form | Powder |
| color | Slightly yellow |
| Water Solubility | Slightly soluble in water. |
| Sensitive | Moisture Sensitive |
| CAS DataBase Reference | 21169-71-1(CAS DataBase Reference) |
Safety information for ISOXAZOLE-5-CARBOXYLIC 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 ISOXAZOLE-5-CARBOXYLIC ACID
| InChIKey | MIIQJAUWHSUTIT-UHFFFAOYSA-N |
New Products
Cyclopropane-1,1-dicarboxylic acid Cefuroxime EP Impurity-A N-Nitroso hydroxy Cetrizine EP Impurity-A Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity Lantanoprost rc B Clidinium Bromide Impurity tert-Butyl (2S)-[1-amino-3-(4-iodophenyl)-1-oxopropan-2-yl]carbamate 4-amino-2-fluoro-N- methylbenzamide 5-Chloro-3- Methyl -1,3-2-benzoxazol-2(3H)-one N-(2-chloropyrimidin-4-yl)-N,2,3- trimethyl-2H- indazol 6-amine N-Boc-1,4-butanediamine 4-Bromo-2-fluoro-N-methylbenzamide valeronitrile 3-chlorobenzyl cyanide 3,4 Dimethoxy Benzylcyanide 3,4 Diethoxy Benzylcyanide 2-Chloro Benzylcyanide 3-Hydroxypropionitrile 5-azidovalericacid 6,6'-bis(difluoromethoxy)-2,2'-bis((3,4-dimethoxypyridin-2-yl)methylsulfinyl)-1H,1'H-5,5'-bibenzo[d]imidazole (1-((2'-(2-((1-((2'-(2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl)-2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methanol (1-((2'-(1-((1-((2'-(2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl)-1H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methanol (4-Methoxyphenyl) hydrazine HydrochlorideRelated products of tetrahydrofuran
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