5-Chloro-2,3-dihydrobenzofuran-4-carboxylic acid CAS 1897006-98-2
| CAS No. | 1897006-98-2 |
| Molecular Formula | C9H7ClO3 |
| Molecular Weight | 198.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-2,3-dihydrobenzofuran-4-carboxylic acid (CAS 1897006-98-2), molecular formula C9H7ClO3 and molecular weight 198.60 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H7ClO3, 5-Chloro-2,3-dihydrobenzofuran-4-carboxylic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.60 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).
As a certified reference material (CRM), 5-Chloro-2,3-dihydrobenzofuran-4-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 | C9H7ClO3 |
| Molecular Weight | 198.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- 2-Acetyl-4-chlorobenzoic acid (CAS 1664338-78-6)
- (2S,3S,4S,5S)-6-chloro-2,3,4,5-tetrahydroxyhexanal (CAS 4990-81-2)
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- Di(pyridin-4-yl)methane (CAS 60776-05-8)
- N-Cyclopropyl-4-iodo-1H-pyrrole-2-carboxamide (CAS 1706452-66-5)
- 5-ISOTHIAZOLAMINE (CAS 82357-92-4)
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