(2-Bromoethylidene)cyclopentane CAS 931-42-0
| CAS No. | 931-42-0 |
| Molecular Formula | C7H11Br |
| Molecular Weight | 175.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (2-Bromoethylidene)cyclopentane is closely related to bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(2-Bromoethylidene)cyclopentane (CAS 931-42-0) is a high-purity analytical reference standard with the molecular formula C7H11Br and a molecular weight of 175.07 g/mol.
Structurally, (2-Bromoethylidene)cyclopentane (C7H11Br) contains bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 175.07 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), (2-Bromoethylidene)cyclopentane meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H11Br |
| Molecular Weight | 175.07 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) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bromoethylidene Standards
- 2-(2-Bromoethylidene)propane-1,3-diol (CAS 830326-71-1)
- (2-bromoethylidene)cyclobutane (CAS 24927-33-1)
- 4-(2-Bromoethylidene)tetrahydro-2H-pyran (CAS 21378-20-1)
- (2-Bromoethylidene)cycloheptane (CAS 90149-86-3)
- 9-(1-Bromoethylidene)-9H-fluorene (CAS 16504-39-5)
- (2-Bromoethylidene)cyclohexane (CAS 932-86-5)
- 1,1-(2-Bromoethylidene)bis[2,3-dichloro-4-methoxy-benzene (CAS 397301-38-1)
Recommended Standards
- 1-Bromohept-2-yne (CAS 18495-26-6)
- 1-(Bromomethyl)-1-cyclohexene (CAS 37677-17-1)
- 1-Bromocyclohept-1-ene (CAS 18317-64-1)
- 1-(Bromomethyl)bicyclo[2.1.1]Hexane (CAS 89892-81-9)
- 2-Amino-1-(2,4,5-trimethoxyphenyl)ethan-1-one (CAS 1379915-16-8)
- 1-Amino-4-hydroxy-2,3-dihydroanthracene-9,10-dione (CAS 144616-03-5)
- 2,3-Dibromo-5,6-dimethoxypyridine (CAS 106331-71-9)
- tert-Butyl (2-((S)-2-amino-N-cyclopropylpropanamido)cyclohexyl)carbamate (CAS 1354025-32-3)
- (2-Fluoro-5-((4-methylpiperazin-1-yl)methyl)phenyl)boronic acid (CAS 1334173-43-1)
- Tert-butyl 9-amino-3-azabicyclo[3.3.1]nonane-3-carboxylate (CAS 1198466-20-4)
- 2H,3H-Chromeno[2,3-c]pyrazol-3-one (CAS 75586-62-8)
- (S)-2-(tert-Butoxy)-2-(4-(chroman-6-yl)-2-methylquinolin-3-yl)acetic acid (CAS 1155270-57-7)
- 1-(tert-Butoxycarbonyl)-3-(4-(trifluoromethyl)benzyl)piperidine-3-carboxylicacid (CAS 887344-24-3)
- Tripeptide-10 citrulline (CAS 960531-53-7)
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 18665070610 / Nicole.chen@cato-chem.com