5-Methyl-3-propylisoxazole-4-carboxylic acid CAS 17147-43-2
| CAS No. | 17147-43-2 |
| Molecular Formula | C8H11NO3 |
| Molecular Weight | 169.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 169.18 g/mol gives 5-Methyl-3-propylisoxazole-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Methyl-3-propylisoxazole-4-carboxylic acid (CAS 17147-43-2), a certified reference material (molecular formula C8H11NO3, MW 169.18 g/mol) for analytical method development and quality control.
5-Methyl-3-propylisoxazole-4-carboxylic acid (C8H11NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Methyl-3-propylisoxazole-4-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H11NO3 |
| Molecular Weight | 169.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- 5-Propylisoxazole-3-carbohydrazide (CAS 90221-28-6)
- 5-Butyl-3-propylisoxazole (CAS 134837-14-2)
- 5-Propylisoxazole-4-carbonyl chloride (CAS 75705-99-6)
- 5-Propylisoxazole-4-carboxylic acid (CAS 134541-04-1)
- 3-Propylisoxazole-5-carboxylic acid (CAS 14716-92-8)
- 3-Propylisoxazole-4-carboxylic acid (CAS 877760-11-7)
- 3-Propylisoxazole-5-carboxamide (CAS 943925-84-6)
- 5-Propylisoxazole-3-carboxamide (CAS 856332-17-7)
Recommended Standards
- Ethyl 3,5-dimethylisoxazole-4-carboxylate (CAS 17147-42-1)
- 3-Methylquinoxaline-2-carbonitrile (CAS 17357-88-9)
- Methyl 2-(1-ethyl-1H-1,2,3-triazol-4-yl)acetate (CAS 1710854-39-9)
- Ethyl 2-(3-methylisoxazol-5-yl)acetate (CAS 173850-46-9)
- 2-((4-Allyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(4-(dimethylamino)phenyl)acetamide (CAS 578718-68-0)
- 1-(Oxan-2-yl)cyclopropane-1-carboxylic acid (CAS 1781643-14-8)
- 2-(4-Isobutoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1421597-99-0)
- 3-Azabicyclo[3.1.0]hexane-1-carbonitrile hydrochloride (CAS 1421939-67-4)
- 6-(Aminomethyl)benzo[d]thiazol-2-amine (CAS 496841-89-5)
- 2-Chloro-N-ethylethanamine hydrochloride (CAS 4535-87-9)
- Benzyl 2-(hydroxymethyl)pyrrolidine-1-carboxylate (CAS 86954-05-4)
- N-((2,3-dihydrobenzofuran-5-yl)methyl)cyclopentanamine (CAS 1157544-58-5)
- (5-(4-Fluorophenyl)-1H-1,2,4-triazol-3-yl)methanol (CAS 1536950-53-4)
- Des-Ala28-Tirzepatide (CAS CATO-CPTD788945)
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