1-bromo-1-(bromomethyl)cyclopropane CAS 33742-80-2
| CAS No. | 33742-80-2 |
| Molecular Formula | C4H6Br2 |
| Molecular Weight | 213.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-bromo-1-(bromomethyl)cyclopropane (C4H6Br2) contains bromine substitution. Halogen substitution raises its density and boiling point; 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.
1-bromo-1-(bromomethyl)cyclopropane (CAS 33742-80-2), molecular formula C4H6Br2 and molecular weight 213.90 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C4H6Br2 |
| Molecular Weight | 213.90 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Br-containing |
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- 2-Bromo-1-(3,3-difluoroazetidin-1-yl)ethanone (CAS 1446515-14-5)
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- 5-Bromo-4-methoxypyrimidine-2-carbonitrile (CAS 114969-90-3)
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Recommended Standards
- 1,4-Dibromobutene (CAS 30794-77-5)
- 2,4-Dibromobut-1-ene (CAS 55030-57-4)
- 1,4-Dibromo-2-butene (CAS 6974-12-5)
- rel-(1S,3s)-1,3-Dibromocyclobutane (CAS 4934-58-1)
- 3-((3-(Dimethylamino)propyl)amino)tetrahydrothiophene 1,1-dioxide hydrochloride (CAS 483351-48-0)
- Haloperidol Impurity 33 (CAS 235109-63-4)
- 1-Bromo-2-isopropoxy-4-(trifluoromethyl)benzene (CAS 1345471-36-4)
- Buquinolate (CAS 5486-03-3)
- 4-(3-Methoxyphenyl)butan-1-amine (CAS 122875-03-0)
- 6-Bromo-7-methyl-1h-indazole (CAS 1337880-06-4)
- 3-((4-Methoxybenzyl)oxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine hydrochloride (CAS 1150271-39-8)
- 6-Chloro-2,3-difluoro-4-(trifluoromethyl)benzaldehyde (CAS 914635-34-0)
- 6-Ethynylquinoline (CAS 78593-41-6)
- Semaglutide impurity 100 (CAS CATO-C4X-2226100)
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