1-Bromo-1-ethylcyclopropane CAS 80204-21-3
| CAS No. | 80204-21-3 |
| Molecular Formula | C5H9Br |
| Molecular Weight | 149.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to bromine substitution, 1-Bromo-1-ethylcyclopropane is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 149.03 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.
1-Bromo-1-ethylcyclopropane (CAS 80204-21-3), molecular formula C5H9Br and molecular weight 149.03 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 | C5H9Br |
| Molecular Weight | 149.03 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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.) | 1979 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 5-bromo-1-pentene (CAS 1119-51-3)
- 1-Bromo-1-methylcyclobutane (CAS 80204-24-6)
- 2-bromo-1,1-dimethylcyclopropane (CAS 3815-09-6)
- 2-Bromo-3-methylbut-1-ene (CAS 31844-96-9)
- 4-Bromo-2-methylbut-1-ene (CAS 20038-12-4)
- 4-Bromo-3-methylbut-1-ene (CAS 31950-55-7)
- 2-Bromo-3-methyl-2-butene 2-bromo-3-methylbut-2-ene 3017-70-7 (CAS 3017-70-7)
- 1-Bromo-2-pentene, predominantly trans 7348-71-2 (CAS 7348-71-2)
Recommended Standards
- 1-(bromomethyl)-2-methyl-cyclopropane (CAS 31950-58-0)
- 1-(bromomethyl)-1-methyl-cyclopropane (CAS 42082-19-9)
- 1-bromopent-2-ene (CAS 20599-27-3)
- (Z)-1-Bromopent-2-ene (CAS 7348-78-9)
- 3,5-Dibromo-4-fluoroaniline (CAS 1003709-35-0)
- [1-(4,6-Dimethyl-pyrimidin-2-yl)-piperidin-4-yl]-acetic acid (CAS 1361112-79-9)
- 2-Cyclopentylidenemalononitrile (CAS 5660-83-3)
- 4-(1h-1,2,4-triaZol-1-ylmethyl)benzene-1-sulfonamide (CAS 1099632-71-9)
- Voglibose Impurity 21 (CAS CATO-C4X-178021)
- 2,5-Dichlorothiophene-3-sulfonyl chloride (CAS 56946-83-9)
- 6'-Bromo-1',4'-dihydro-2'H-spiro[piperidine-4,3'-[1,8]naphthyridin]-2'-one (CAS 1416440-35-1)
- 1-(2-Bromopyridin-5-yl)-N,N-dimethylpiperidin-4-amine (CAS 1169698-77-4)
- 4-(4-Methoxyphenyl)-2-methylphenol (CAS 103594-29-2)
- Semaglutide impurity 273 (CAS CATO-C4X-2226273)
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