9-Bromo-2,3-dihydro-1H-cyclopenta[b]quinoline CAS 18528-77-3
| CAS No. | 18528-77-3 |
| Molecular Formula | C12H10BrN |
| Molecular Weight | 248.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
9-Bromo-2,3-dihydro-1H-cyclopenta[b]quinoline (CAS 18528-77-3) is a high-purity analytical reference standard with the molecular formula C12H10BrN and a molecular weight of 248.12 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 9-Bromo-2,3-dihydro-1H-cyclopenta[b]quinoline is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 248.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C12H10BrN |
| Molecular Weight | 248.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 2-(2-Bromo-4-fluorophenyl)ethanethioamide (CAS 1016726-84-3)
- 2-(5-Bromo-2-fluorophenyl)ethanethioamide (CAS 1016747-07-1)
- 2-(3-Bromo-4-fluorophenyl)ethanethioamide (CAS 1016751-69-1)
- 6-Bromo-[1,1'-biphenyl]-3-amine (CAS 1036750-83-0)
- 3'-Bromo-[1,1'-biphenyl]-3-amine (CAS 1049131-86-3)
- 3-Bromo-5-(m-tolyl)pyridine (CAS 1070882-67-5)
- 2-[bromo(phenyl)methyl]pyridine (CAS 1073477-82-3)
- 2-Bromo-4-(4-methylphenyl)pyridine (CAS 111971-30-3)
Recommended Standards
- 2-(2-(Bromomethyl)phenyl)pyridine (CAS 184889-81-4)
- 1-(5-Bromopentyl)pyrrolidine-2,5-dione (CAS 3344-78-3)
- 2-Amino-6-nitro-4-(trifluoromethoxy)nicotinonitrile (CAS 1804027-77-7)
- 2-(3-Bromophenyl)-5-methylpyridine (CAS 872856-43-4)
- (3R)-3-aminoheptanoic acid hydrochloride (CAS 865188-30-3)
- [1,1'-Biphenyl]-4-yl 4-methylbenzenesulfonate (CAS 76996-40-2)
- 3-(((4-Chlorophenyl)imino)methyl)-2-hydroxy-1,6,7,11b-tetrahydro-4H-pyrido[2,1-a]isoquinolin-4-one (CAS 338953-30-3)
- Olsalazine EP Impurity H (CAS CATO-C4X-18018)
- 2-(4-Chlorophenyl)-2,3-dihydro-1H-indene-2-carboxylic acid (CAS 1266693-59-7)
- Diethyl 2,2'-(butane-1,4-diylbis(azanediyl))bis(6-oxo-1,6-dihydropyrimidine-5-carboxylate) (CAS 92736-10-2)
- 2-Ethyl-4-methyl-1-nitrobenzene (CAS 102878-75-1)
- (S)-N-Boc-1-fluoro-2-butylamine (CAS 2006287-00-7)
- (E)-3-(6-(trifluoromethyl)pyridin-3-yl)acrylic acid (CAS 944805-93-0)
- Antifreeze Polypeptide 6 (winter flounder) trifluoroacetate salt (CAS 122604-16-4)
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