5-Chloro-7-methyl-2,3-dihydro-1-benzofuran-3-one CAS 78132-94-2
| CAS No. | 78132-94-2 |
| Molecular Formula | C9H7ClO2 |
| Molecular Weight | 182.60 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.
CATO supplies 5-Chloro-7-methyl-2,3-dihydro-1-benzofuran-3-one (CAS 78132-94-2), a certified reference material (molecular formula C9H7ClO2, MW 182.60 g/mol) for analytical method development and quality control.
5-Chloro-7-methyl-2,3-dihydro-1-benzofuran-3-one (C9H7ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. 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).
CATO manufactures 5-Chloro-7-methyl-2,3-dihydro-1-benzofuran-3-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 | C9H7ClO2 |
| Molecular Weight | 182.60 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 5-Chloro-3,4-dihydro-2h-1-benzopyran-3-one (CAS 1154740-80-3)
- 5-Chloro-7-methylisobenzofuran-1(3H)-one (CAS 118343-26-3)
- 7-Chloro-5-hydroxy-2,3-dihydro-1H-inden-1-one (CAS 1199782-69-8)
- 5-Chloro-2,3-dihydrochromen-4-one (CAS 1199782-82-5)
- 4-Chloro-6-hydroxy-2,3-dihydro-1H-inden-1-one (CAS 1199782-98-3)
- 5-Chloro-6-hydroxy-2,3-dihydro-1H-inden-1-one (CAS 1228678-18-9)
- 6-Chloro-5-hydroxy-2,3-dihydro-1H-inden-1-one (CAS 1260012-31-4)
- 2-Chloro-4-ethenylbenzoic acid (CAS 1266121-77-0)
Recommended Standards
- 5-Chloro-3-methylisobenzofuran-1(3H)-one (CAS 60253-34-1)
- 6-Chloro-4-chromanone (CAS 37674-72-9)
- 5-Chloro-2,3-dihydrobenzofuran-7-carbaldehyde (CAS 82060-93-3)
- 6-Chloro-chroman-2-one (CAS 4377-63-3)
- 5-[6-fluoro-1-(propan-2-yl)-1h-1,3-benzodiazol-2-yl]-2-methylaniline (CAS 1333549-25-9)
- 4-Chloro-3-methyl-2,2-diphenylbutyronitrile (CAS 133132-74-8)
- 2-Bromo-6-pyrrolidinobenzonitrile (CAS 1365271-35-7)
- 2-Methyl-4-(tetrahydro-2h-pyran-4-yl)butan-1-amine (CAS 1344051-90-6)
- 2,4-Dimethoxy-5-nitro-pyridine (CAS 607373-84-2)
- 4-(1-Piperazinyl)-1-butanol (CAS 5623-92-7)
- (S)-Methyl 2-amino-4-(dimethylamino)butanoate (CAS 794486-86-5)
- 2,2,7-Trimethylchroman-4-amine (CAS 112225-65-7)
- tert-Butyl ethyl(3,4,5,6-tetrahydro-[2,3'-bipyridin]-6'-yl)carbamate (CAS 1352492-59-1)
- Semaglutide Impurity 115 (CAS CATO-C4X-2226115)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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