1,1-Bis-(4-Bromophenyl)-2,2-dichloroethylene CAS 21655-73-2
| CAS No. | 21655-73-2 |
| Molecular Formula | C14H8Br2Cl2 |
| Molecular Weight | 406.93 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 1,1-Bis-(4-Bromophenyl)-2,2-dichloroethylene (CAS 21655-73-2), a certified reference material (molecular formula C14H8Br2Cl2, MW 406.93 g/mol) for analytical method development and quality control.
Structurally, 1,1-Bis-(4-Bromophenyl)-2,2-dichloroethylene (C14H8Br2Cl2) contains chlorine/bromine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 406.93 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 1,1-Bis-(4-Bromophenyl)-2,2-dichloroethylene 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 | C14H8Br2Cl2 |
| Molecular Weight | 406.93 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl/Br-containing |
Related Bis Standards
- N-(3-Bromophenyl)-5-(3-chloro-4-methoxyphenyl)furan-2-carboxamide (CAS 853333-08-1)
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- 4-((4-Bromophenyl)sulfonyl)-N-methyl-2-(o-tolyl)oxazol-5-amine (CAS 478171-37-8)
- N-(2-Bromophenyl)-2-((4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 618413-46-0)
- N-(3-Bromophenyl)-2-((4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 573709-48-5)
- N-(4-Bromophenyl)-2-((4-ethyl-5-(furan-2-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 618412-90-1)
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Recommended Standards
- Cyclohexyl 3-(4-chlorophenyl)-3-(phenylsulfonyl)propanoate (CAS 2376300-22-8)
- 3-(Azepan-1-ylsulfonyl)-N-(3-chlorobenzyl)benzamide (CAS 851873-40-0)
- Cyclohexyl 3-(3-chlorophenyl)-3-(phenylsulfonyl)propanoate (CAS 2376300-28-4)
- ML-261 (CAS 902523-58-4)
- rel-(S)-5-(Hydroxymethyl)-3-((R)-1-phenylethyl)oxazolidin-2-one (CAS 480424-72-4)
- N-Butylfluorescein (CAS 335193-91-4)
- 3-((Tert-butoxycarbonyl)amino)-3-(3,4-dichlorophenyl)propanoic acid (CAS 193633-52-2)
- 4-Bromo-7,8-dimethylquinoline-3-carboxylic acid (CAS 1378261-09-6)
- 3-(((Benzyloxy)carbonyl)amino)-3-(1-(tert-Butoxycarbonyl)piperidin-3-yl)propanoicacid (CAS 372144-13-3)
- N,4-dimethyl-N-((triisopropylsilyl)ethynyl)benzenesulfonamide (CAS 1007597-63-8)
- 1-Cyclopentyl-3-(3,4,5-trimethoxyphenyl)urea (CAS 68060-78-6)
- 2-(Aminomethyl)-6-bromo-4-(difluoromethyl)-3-(trifluoromethyl)pyridine (CAS 1805948-62-2)
- 4-Methyl-5-(methylsulfonyl)pyrimidin-2-amine (CAS 1255147-35-3)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
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