5-chloroindole-2-carboxylic acid CAS 10517-21-2
| CAS No. | 10517-21-2 |
| Molecular Formula | C9H14ClNO2 |
| Molecular Weight | 203.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 5-chloroindole-2-carboxylic acid (C9H14ClNO2) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
5-chloroindole-2-carboxylic acid (CAS 10517-21-2), molecular formula C9H14ClNO2 and molecular weight 203.67 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-chloroindole-2-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 | 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.) | 1960 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related chloroindole Standards
- Methyl 4-Chloroindole-3-carboxylate (CAS 101909-42-6)
- Methyl 7-Chloroindole-3-carboxylate (CAS 1260836-55-2)
- Methyl 5-Chloroindole-3-carboxylate (CAS 172595-67-4)
- 6-Chloroindole-3-acetic Acid (CAS 1912-44-3)
- 4-Chloroindole-2-carbohydrazide (CAS 64932-50-9)
- 6-Chloroindole-2-carbohydrazide (CAS 20948-68-9)
- Methyl 6-Chloroindole-2-carboxylate (CAS 98081-84-6)
- Methyl 6-Chloroindole-3-carboxylate (CAS 921194-97-0)
Recommended Standards
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- tert-butyl N-[6-(bromomethyl)-2-pyridyl]-N-tert-butoxycarbonyl-carbamate (CAS 888322-11-0)
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