5-chloro-3H-benzofuran-2-one CAS 28033-47-8
Purity 97%+In StockPharmaceutical Standards
| 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
CATO supplies 5-chloro-3H-benzofuran-2-one (CAS 28033-47-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C8H11ClO2. Molecular weight: 174.62 g/mol. Batch-specific COA and technical support are available on request.
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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- (5-Chloro-2-methoxyphenyl)methanol (CAS 7035-10-1)
- 2-chloro-1-(1-methyl-2-oxabicyclo[2.1.1]hexan-4-yl)ethanone (CAS 2452342-59-3)
- 2-chloro-1-(3-oxabicyclo[4.1.0]heptan-7-yl)ethanone (CAS 2452340-85-9)
- 2-chloro-1-(4-methyl-2-oxabicyclo[2.1.1]hexan-1-yl)ethanone (CAS 2573212-75-4)
- 2-chloro-1-(5-oxaspiro[2.4]heptan-2-yl)ethanone (CAS 2452341-78-3)
- 2-chloro-3-ethoxycyclohex-2-en-1-one (CAS 87823-75-4)
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Recommended Standards
- 4-fluorobutane-1-sulfonyl chloride (CAS 372-00-9)
- 7-chlorobenzofuran-3-one (CAS 3260-94-4)
- 4-Chloro-3-cyclohexene-1-carboxylic Acid Methyl Ester (CAS 27705-05-1)
- Ethyl 5-cyano-6-mercaptopicolinate (CAS 929975-82-6)
- Sodium Cyclamate EP Impurity C HCl (Cyclohexylamine HCl) (CAS 4998-76-9)
- 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)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com