4-chloro-1H-indole-6-carboxylic acid CAS 885520-25-2
| CAS No. | 885520-25-2 |
| Molecular Formula | C9H14ClNO2 |
| Molecular Weight | 203.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H14ClNO2, 4-chloro-1H-indole-6-carboxylic acid contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 203.67 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).
4-chloro-1H-indole-6-carboxylic acid (CAS 885520-25-2), molecular formula C9H14ClNO2 and molecular weight 203.67 g/mol, is a CATO reference standard with documented purity and traceability.
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), 4-chloro-1H-indole-6-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 | C9H14ClNO2 |
| Molecular Weight | 203.67 g/mol |
| Appearance | 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 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related chloro Standards
- 3-Chloro-N-phenylaniline (CAS 101-17-7)
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- 2-Chloro-4-(4-methylphenyl)pyridine (CAS 1202574-24-0)
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- 4-chloro-5,5-dimethyl-5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one (CAS 1226804-02-9)
Recommended Standards
- 4-chloro-1H-indole-5-carboxylic acid (CAS 251107-41-2)
- 4-chloro-1H-indole-7-carboxylic acid (CAS 875305-77-4)
- 4-chloro-1H-indole-2-carboxylic acid (CAS 24621-73-6)
- 4-chloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carbaldehyde (CAS 2306278-14-6)
- 2,3,5,6-Tetrafluoro-4-(phenylsulfonyl)pyridine (CAS 23449-67-4)
- 8-Chloro-6-(trifluoromethyl)-N-(3-(trifluoromethyl)phenyl)imidazo[1,2-a]pyridine-2-carboxamide (CAS 353258-67-0)
- 4-Chloro-6,7-dimethylpteridine (CAS 32587-03-4)
- 1-(Furan-2-yl)-n2-isopropyl-n1,n1-dimethylethane-1,2-diamine (CAS 1038256-10-8)
- Tetrakis(4-acetylphenyl)methane (CAS 313484-93-4)
- (Sax,R,R)-C3-ACBP (CAS 2829282-16-6)
- 2,4-Dicyclopropylbenzaldehyde (CAS 1245645-99-1)
- 3-Methoxy-1H-pyrazol-4-amine (CAS 2450343-54-9)
- 4-Nitro-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (CAS 1000340-43-1)
- Fibrinopeptide A (human) (CAS 25422-31-5)
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