4-Chloro-5-methoxy-1H-indazole-3-carboxylic acid CAS 1505590-75-9
| CAS No. | 1505590-75-9 |
| Molecular Formula | C9H7ClN2O3 |
| Molecular Weight | 226.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H7ClN2O3, 4-Chloro-5-methoxy-1H-indazole-3-carboxylic acid 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 226.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 4-Chloro-5-methoxy-1H-indazole-3-carboxylic acid (CAS 1505590-75-9), a certified reference material (molecular formula C9H7ClN2O3, MW 226.62 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 4-Chloro-5-methoxy-1H-indazole-3-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 | C9H7ClN2O3 |
| Molecular Weight | 226.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 2-Bromo-1,5-difluoro-3-nitrobenzene (CAS 877161-74-5)
- (2R,4R)-1-[(tert-Butoxy)carbonyl]-2-methylpiperidine-4-carboxylic acid (CAS 1932555-95-7)
- Ethyl 5-methylbenzofuran-2-carboxylate (CAS 53715-88-1)
- N-(4-(1,1-Dioxido-1,2-thiazinan-2-yl)phenyl)furan-2-carboxamide (CAS 899979-82-9)
- 2'-(Hydroxymethyl)-[1,1'-biphenyl]-4-ol (CAS 134967-58-1)
- (S)-Methyl 2-oxoimidazolidine-4-carboxylate (CAS 157001-86-0)
- Liraglutide Impurity 18 TFA Salt (CAS CATO-C4X-199218)
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