4-Chloro-5,7-difluoro-1H-indole-2-carboxylic acid CAS 2755783-23-2
| CAS No. | 2755783-23-2 |
| Molecular Formula | C9H4ClF2NO2 |
| Molecular Weight | 231.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Chloro-5,7-difluoro-1H-indole-2-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.
CATO supplies 4-Chloro-5,7-difluoro-1H-indole-2-carboxylic acid (CAS 2755783-23-2), a certified reference material (molecular formula C9H4ClF2NO2, MW 231.58 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H4ClF2NO2, 4-Chloro-5,7-difluoro-1H-indole-2-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 231.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H4ClF2NO2 |
| Molecular Weight | 231.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 2002 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 7-Chloro-4,4-difluoroisoquinoline-1,3(2H,4H)-dione (CAS 1393726-80-1)
- 2-Chloro-4-(trifluoromethyl)thiazole-5-carboxylic acid (CAS 72850-61-4)
- 5-Chloro-6,7-difluoro-1H-indole-2-carboxylic acid (CAS 2368980-42-9)
- 2-Chloro-5-methoxy-4-nitrobenzoic acid (CAS 101581-13-9)
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Recommended Standards
- 2,4,6-trifluoropyridine-3-sulfonyl chloride (CAS 1803609-38-2)
- 6-Chloro-2,3-difluoro-4-(trifluoromethyl)aniline (CAS 914635-28-2)
- 2,2,2-Trichloro-N-pentylacetimidamide (CAS 35518-70-8)
- 3-Chloro-4-(pentafluoroethyl)pyridine (CAS 1816286-90-4)
- (5-Methoxy-1-methyl-1H-pyrrolo[3,2-b]pyridin-6-yl)boronic acid (CAS 956407-29-7)
- N-(3-Fluorobenzyl)-2,4-dimethylaniline (CAS 1019565-78-6)
- 3-(3-(3-Ethoxy-3-oxopropoxy)propoxy)propanoicacid (CAS 886362-92-1)
- 6-fluoro-4-iodonicotinaldehyde (CAS 1289017-52-2)
- 3-Iodoquinoline-8-carboxylic acid (CAS 1934445-70-1)
- 3-Bromo-6-methoxy-4-nitro-1H-indazole (CAS 1000341-13-8)
- [(3-chloro-4-methylphenyl)carbamoyl](phenyl)methyl 4-(carbamoylamino)benzoate (CAS 562860-62-2)
- 3-(aminomethyl)-N-propylbenzamide (CAS 926225-15-2)
- 4-Fluorothieno[2,3-c]pyridine (CAS 1326715-22-3)
- Renin Inhibitor Peptide (CAS 50410-01-0)
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