7-Chloro-1H-indazole-3-carboxylic acid CAS 129295-32-5
| CAS No. | 129295-32-5 |
| Molecular Formula | C8H5ClN2O2 |
| Molecular Weight | 196.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 196.59 g/mol gives 7-Chloro-1H-indazole-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Chloro-1H-indazole-3-carboxylic acid (CAS 129295-32-5), molecular formula C8H5ClN2O2 and molecular weight 196.59 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H5ClN2O2, 7-Chloro-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 196.59 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H5ClN2O2 |
| Molecular Weight | 196.59 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 5-Chloro-2-methyl-4-nitrobenzonitrile (CAS 101495-54-9)
- 7-Chloro-2H-indazole-5-carboxylic acid (CAS 1031417-54-5)
- 3-Chloro-1H-indazole-5-carboxylic acid (CAS 1031417-73-8)
- 5-Chloro-1H-indazole-3-carboxylic acid (CAS 1077-95-8)
- 5-Chloro-2-methyl-3-nitro-benzonitrile (CAS 1082040-48-9)
- 2-(2-Chloro-3-nitrophenyl)acetonitrile (CAS 108772-95-8)
- 6-Chloro-1H-pyrrolo[2,3-b]pyridine-4-carboxylic acid (CAS 1167056-92-9)
- Methyl 3-chloro-2-cyano-pyridine-4-carboxylate (CAS 1168102-35-9)
Recommended Standards
- 6-Chloro-1H-indazole-3-carboxylic Acid (CAS 129295-31-4)
- 7-Chloro-1H-benzo[d]imidazole-5-carboxylic acid (CAS 1301214-57-2)
- Methyl 2-chloro-4-cyanonicotinate (CAS 1289188-60-8)
- 7-Chloro-2,3-dihydro-[1,4]dioxino-[2,3-b]pyridine-8-carbonitrile (CAS 1305325-27-2)
- Tert-butyl (2-carbamimidoylphenyl)carbamate (CAS 1340558-17-9)
- 5-Bromo-1-(4-fluorophenyl)-1H-pyrazolo[3,4-b]pyridin-6(7H)-one (CAS 1437433-13-0)
- 1-(7,7-Dimethyl-6,8-dioxa-2-azaspiro[3.5]nonan-2-yl)-2-(thiophen-2-yl)ethan-1-one (CAS 1396684-76-6)
- Tert-butyl 4-hydroxy-4-((((tetrahydrofuran-2-yl)methyl)amino)methyl)piperidine-1-carboxylate (CAS 1440535-70-5)
- Gadolinium 156 (CAS 14392-07-5)
- 2-Chloro-4-(difluoromethyl)-5-methylnicotinaldehyde (CAS 1807069-50-6)
- 2-(1-((4-Bromophenyl)amino)ethylidene)malononitrile (CAS 360062-16-4)
- (+/-)-2-Acetylaminobutanoic Acid-d3 (CAS 1219397-36-0)
- Canagliflozin Impurity 39 (CAS 1222075-02-6)
- Semaglutide impurity 237 (CAS CATO-C4X-2226237)
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