6-Chloro-5-methoxy-1H-indazole-3-carboxylic acid CAS 2091509-18-9
| CAS No. | 2091509-18-9 |
| Molecular Formula | C9H7ClN2O3 |
| Molecular Weight | 226.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Chloro-5-methoxy-1H-indazole-3-carboxylic acid (CAS 2091509-18-9) is a high-purity analytical reference standard with the molecular formula C9H7ClN2O3 and a molecular weight of 226.62 g/mol.
Based on its molecular formula C9H7ClN2O3, 6-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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), 6-Chloro-5-methoxy-1H-indazole-3-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 | 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.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 1-[(4-chloro-1h-pyrazol-1-yl)methyl]-1h-pyrazole-4-carboxylic acid (CAS 1006452-63-6)
- 1-[(4-chloro-1h-pyrazol-1-yl)methyl]-1h-pyrazole-3-carboxylic acid (CAS 1006473-16-0)
- 4-Chloro-1-(1h-pyrazol-1-ylmethyl)-1h-pyrazole-3-carboxylic acid (CAS 1006473-31-9)
- 5-Chloro-3,6-dimethylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1011400-01-3)
- Ethyl 2-chloro-9h-purine-8-carboxylate (CAS 1044772-74-8)
- Methyl 2-(6-chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)acetate (CAS 1146291-07-7)
- Methyl 6-chloro-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-4-carboxylate (CAS 1190312-76-5)
- Methyl 5-chloro-2-oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-4-carboxylate (CAS 1190321-73-3)
Recommended Standards
- 5-Chloro-2-ethyl-6-nitrobenzo[d]oxazole (CAS 886361-25-7)
- 7-Allyl-8-chloro-3,7-dihydro-1H-purine-2,6-dione (CAS 862893-33-2)
- 5-[(4-chloro-1h-pyrazol-1-yl)methyl]furan-2-carboxylic acid (CAS 312309-03-8)
- Ethyl 5-chloro[1,2,4]triazolo[4,3-a]pyrimidine-7-carboxylate (CAS 99951-90-3)
- Dimethyl 1-phenyl-1H-1,2,3-triazole-4,5-dicarboxylate (CAS 17304-69-7)
- 53801-63-1 EBD3062374 ZINC COPPER; ZINC-COPPER COUPLE; COPPER-ZINC COUPLE; ZINC COPPER COUPLE 25GR; ZINC COPPER COUPLE 100GR; ZINC-COPPER COUPLE, POWDER; ZINC-COPPER COUPLE, COPPER CONTENT TYPICALLY CA.; ZINC COPPER COMPOSITE, -100 MESH, 99% (METALS BASIS); ZINC-COPPER COUPLE: COPPER CONTENT TYPICALLY CA 1-3%.; ZINC COPPER COMPOSITE (98:2WT%), ZINC-COPPER COUPLE (CAS 53801-63-1)
- Propyl 4-(nicotinamido)benzoate (CAS 346724-12-7)
- (1R,2S)-1-Amino-2-ethylcyclopropanecarboxylic acid (CAS 65878-53-7)
- 1-(1-(Azetidin-3-yl)-1H-1,2,3-triazol-4-yl)ethan-1-ol (CAS 1565324-38-0)
- 4-((Tert-butoxycarbonyl)amino)-2-methylbenzoic acid (CAS 1303931-49-8)
- 1-(1-Cyclopropyl-2,5-dimethyl-1H-pyrrol-3-yl)ethanone (CAS 943108-90-5)
- (1R,3S)-3-methoxycyclohexanamine;hydrochloride (CAS 2331211-70-0)
- 2-(tert-Butoxy)-6-chloroaniline (CAS 1369877-65-5)
- Semaglutide impurity 215 (CAS CATO-C4X-2226215)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com