5-chloro-3H-benzofuran-2-one CAS 28033-47-8
| CAS No. | 28033-47-8 |
| Molecular Formula | C8H11ClO2 |
| Molecular Weight | 174.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-chloro-3H-benzofuran-2-one is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-chloro-3H-benzofuran-2-one (CAS 28033-47-8), a certified reference material (molecular formula C8H11ClO2, MW 174.62 g/mol) for analytical method development and quality control.
5-chloro-3H-benzofuran-2-one (C8H11ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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-chloro-3H-benzofuran-2-one 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 | C8H11ClO2 |
| Molecular Weight | 174.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Cl-containing |
Related chloro Standards
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- 2-chloro-1-(1-methyl-2-oxabicyclo[2.1.1]hexan-4-yl)ethanone (CAS 2452342-59-3)
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Recommended Standards
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- 2-Amino-2,2-diphenylethan-1-ol (CAS 18903-44-1)
- 6-(2,3-Dimethylphenyl)-3-pyridinecarbaldehyde (CAS 924817-85-6)
- 4-(4-(Trifluoromethyl)-1H-pyrazol-1-yl)benzoic acid (CAS 1495970-13-2)
- 5-(4-Bromo-3-chloro-2-methylphenyl)oxazole (CAS 2364585-24-8)
- N-Boc-2-thiazolamine (CAS 170961-15-6)
- n-(Thiazol-2-ylmethyl)ethanamine (CAS 680591-00-8)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
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