5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid CAS 1011396-41-0
| CAS No. | 1011396-41-0 |
| Molecular Formula | C11H9ClN2O3 |
| Molecular Weight | 252.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 252.65 g/mol gives 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1011396-41-0) is a high-purity analytical reference standard with the molecular formula C11H9ClN2O3 and a molecular weight of 252.65 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 252.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H9ClN2O3 |
| Molecular Weight | 252.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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- 4-Fluoro-3-iodo-2-(trifluoromethyl)benzonitrile (CAS 1539314-78-7)
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- Ethyl imidazo[1,2-a]pyridine-2-carboxylate hydrochloride (CAS 82090-51-5)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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