Methyl 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate CAS 1011398-90-5
| CAS No. | 1011398-90-5 |
| Molecular Formula | C12H11ClN2O3 |
| Molecular Weight | 266.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 266.68 g/mol gives Methyl 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate (CAS 1011398-90-5), molecular formula C12H11ClN2O3 and molecular weight 266.68 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H11ClN2O3, Methyl 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 266.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Methyl 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate 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 | C12H11ClN2O3 |
| Molecular Weight | 266.68 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 DMSO, DMF, methanol |
| 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 |
Related Methyl Standards
- 1-((4-Chloro-2-methylphenoxy)methyl)-1h-pyrazole-3-carboxylic acid (CAS 1004193-09-2)
- 1-(2-Chloro-5-methylphenoxymethyl)-1h-pyrazole-3-carboxylic acid (CAS 1004193-11-6)
- 4-chloro-1-[(4-methylphenoxy)methyl]-1H-pyrazole-3-carboxylic acid (CAS 1006444-40-1)
- 1015844-55-9 [1-(3-Chloro-phenyl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl]-acetic acid (CAS 1015844-55-9)
- 2-Chloro-3-((4-nitrophenyl)amino)cyclohex-2-en-1-one (CAS 1022597-48-3)
- 5-(3-Chloro-4-ethoxyphenyl)-1H-pyrazole-3-carboxylic acid (CAS 1037719-40-6)
- Ethyl 4-chloro-7-methoxyquinazoline-2-carboxylate (CAS 1189107-22-9)
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Recommended Standards
- 2-(1-(2-Chlorophenyl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl)acetic acid (CAS 1015844-43-5)
- 1-((3-Chlorophenoxy)methyl)-1h-pyrazole-3-carbohydrazide (CAS 1004194-09-5)
- 2-(1-(4-Chlorophenyl)-5-hydroxy-3-methyl-1H-pyrazol-4-yl)acetic acid (CAS 1015844-49-1)
- 1-((4-Chlorophenoxy)methyl)-1h-pyrazole-3-carbohydrazide (CAS 1004194-06-2)
- 2-(4-(Pyrrolidin-1-ylsulfonyl)phenyl)ethan-1-amine hydrochloride (CAS 1224170-51-7)
- 3-Chloro-4-hydroxypyridine (CAS 89284-20-8)
- trans-1-Benzyl-4-methyl-piperidin-3-ol (CAS 58878-95-8)
- 1-(3,4-Dimethylphenyl)ethanamine (CAS 91251-29-5)
- 1-(2,4-Dimethylphenyl)-3-phenyl-1H-pyrazole-5(4H)-one (CAS 1003751-09-4)
- 4-Ethyl-3-propyl-1-(pyridin-3-yl)-1H-pyrazol-5-amine (CAS 27834-98-6)
- DL-α-Hydroxyglutaric acid disodium salt (CAS 40951-21-1)
- 3-Amino-6-phenylpyridazine (CAS 14966-91-7)
- 1-(2-(4-Chlorophenoxy)-5-fluorophenyl)ethan-1-ol (CAS 1156736-57-0)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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