Cyclopropanecarbonyl Chloride CAS 4023-34-1
| CAS No. | 4023-34-1 |
| Molecular Formula | C4H5ClO |
| Molecular Weight | 104.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a hydroxyl group, an ether linkage, chlorine substitution, Cyclopropanecarbonyl Chloride is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 104.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Cyclopropanecarbonyl Chloride (CAS 4023-34-1), molecular formula C4H5ClO and molecular weight 104.53 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H5ClO |
| Molecular Weight | 104.53 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Cyclopropanecarbonyl Standards
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Recommended Standards
- (E)-2-Butenoyl chloride (CAS 625-35-4)
- 2-Chloro-4,5-dihydro-1H-imidazole (CAS 54255-11-7)
- Methacryloyl Chloride (stabilized with MEHQ) (CAS 920-46-7)
- 1-Chloro-2-pentene (CAS 10071-60-0)
- 2-Fluoro-4-iodopyridin-3-ol (CAS 1227593-95-4)
- 2-(6-Chloro-1H-indol-1-yl)ethan-1-amine (CAS 259860-27-0)
- tert-butyl 2-(methoxymethyl)-3-oxo-azetidine-1-carboxylate (CAS 1909314-38-0)
- 3-((Hydroxyimino)methyl)benzonitrile (CAS 64847-76-3)
- 6-(4-methoxyphenyl)-3-methyl-2-(methylsulfanyl)pyrimidin-4(3H)-one (CAS 1184913-52-7)
- Methyl 3-(3,5-difluorophenyl)-5-methoxybenzoate (CAS 1820747-70-3)
- tert-Butyl 3-hydroxy-2-isopropyl-1-pyrrolidinecarboxylate (CAS 1518222-68-8)
- (4-Phenylpyrrolidin-3-yl)-carbamic Acid tert-Butyl Ester (CAS 351360-61-7)
- 3-Isopropylpicolinaldehyde (CAS 780800-74-0)
- D-Thr7-Tirzepatide (CAS CATO-CPTD788924)
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