4,4''-Dibromo-1,1':3',1''-terphenyl CAS 83909-22-2
| CAS No. | 83909-22-2 |
| Molecular Formula | C18H12Br2 |
| Molecular Weight | 388.10 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.
4,4''-Dibromo-1,1':3',1''-terphenyl (CAS 83909-22-2), molecular formula C18H12Br2 and molecular weight 388.10 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to bromine substitution, a polycyclic aromatic system, 4,4''-Dibromo-1,1':3',1''-terphenyl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 388.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures 4,4''-Dibromo-1,1':3',1''-terphenyl under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H12Br2 |
| Molecular Weight | 388.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2',5'-Dibromo-1,1':4',1''-terphenyl (CAS 1293386-03-4)
- 4,4’’-Dibromo-p-terphenyl (CAS 17788-94-2)
- 3,3''-Dibromo-1,1':2',1''-terphenyl (CAS 95918-90-4)
- 3,3''-Dibromo-1,1':3',1''-terphenyl (CAS 95962-62-2)
- 4,4''-Dibromo-1,1':2',1''-terphenyl (CAS 24253-43-8)
- 4-(6,8-Dibromo-2-methylimidazo[1,2-a]pyridin-3-yl)thiazol-2-amine (CAS 886507-34-2)
- 6,11-dibromo-1,4-diazatriphenylene (CAS 1012836-59-7)
- 5,9-Dibromo-7H-benzo[c]fluoren-7-one (CAS 1637660-36-6)
Recommended Standards
- Bromhexine Impurity 10 (CAS 2512203-87-9)
- Bromhexine Impurity 11 (CAS 21237-84-3)
- Ambroxol Impurity 39 (CAS 1797894-71-3)
- 2,7-Bis(bromomethyl)pyrene (CAS 63996-39-4)
- 2-(Furan-2-carbonyl)-N-methylhydrazine-1-carbothioamide (CAS 41735-61-9)
- 2-Bromo-7-chloro-5-tosyl-5H-pyrrolo[2,3-b]pyrazine (CAS 1956376-14-9)
- (R)-3-Phenylmorpholine (CAS 74572-03-5)
- 1-(3-Methylpyrazin-2-yl)piperidine-2-carboxylic acid (CAS 1261230-10-7)
- 5-Chloro-1H-pyrazolo[3,4-b]pyridine (CAS 1240725-66-9)
- (R)-N1-(2,4-Dimethoxybenzyl)-6,7-dihydro-5H-cyclopenta[c]pyridine-1,5-diamine (CAS 2096419-43-9)
- Mavacoxib Impurity 9 (CAS CATO-C4X-30599)
- (4-(2,2-Difluoropropoxy)pyrimidin-5-yl)methanamine (CAS 1799579-59-1)
- 2-{[(1-ethyl-5-methyl-1H-pyrazol-4-yl)methyl]amino}ethanol (CAS 1170058-09-9)
- Protein Kinase C? Peptide Substrate (CAS 120253-69-2)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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