3-Bromo-1-methyl-1,4-dihydroquinoline CAS 21979-55-5
| CAS No. | 21979-55-5 |
| Molecular Formula | C10H9BrN |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Bromo-1-methyl-1,4-dihydroquinoline.
3-Bromo-1-methyl-1,4-dihydroquinoline (CAS 21979-55-5), molecular formula C10H9BrNI and molecular weight 349.99 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H9BrNI, 3-Bromo-1-methyl-1,4-dihydroquinoline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine/iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 349.99 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Bromo-1-methyl-1,4-dihydroquinoline 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 | C10H9BrN I |
| Molecular Weight | 349.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br/I-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 4,9-Bis(5-bromo-2-thienyl)-6,7-bis[4-[(2-ethylhexyl)oxy]phenyl][1,2,5]thiadiazolo[3,4-g]quinoxaline (CAS 1000000-25-8)
- 14-Bromo-1-tetradecyne (CAS 1000014-24-3)
- 8-Bromo-6-chloro-imidazo[1,2-a]pyridine-2-carboxylic acid (CAS 1000017-98-0)
- ethyl 3-bromo-5-chloroimidazo[1,2-a]pyridine-2-carboxylate (CAS 1000018-03-0)
- 5-bromo-1-methyl-1H-indazol-3-amine (CAS 1000018-06-3)
- 5-Bromo-2-methyl-4-methylsulfonylphenylhydrazine (CAS 1000018-33-6)
- 1-[(5-Bromo-2-methyl-4-methylsulfonyl)phenyl]-piperidine-4-carboxamide (CAS 1000018-34-7)
- 1-[(5-Bromo-2-methyl-4-methylsulfonyl)phenyl]-piperazine (CAS 1000018-35-8)
Recommended Standards
- 1-(Benzyloxy)-3-((2-bromo-5-fluoro-4-nitrophenyl)amino)propan-2-ol (CAS 1431698-06-4)
- (E)-5-(((4-Bromobenzylidene)amino)methyl)-2-methylpyrimidin-4-amine (CAS 20352-47-0)
- 4-Methoxy-1-phenyl-1,3,5-triazin-2(1H)-one (CAS 84612-98-6)
- 3',4'-Dichloro-[1,1'-biphenyl]-4-carboxylic acid (CAS 7111-64-0)
- (5-Chloro-2-iodophenyl)methanamine (CAS 439117-11-0)
- 3-ISothiocyanophenylboronic acid (CAS 133887-74-8)
- Penicillic acid (CAS 90-65-3)
- Bicyclo[3.2.0]heptan-6-amine hydrochloride (CAS 2126177-28-2)
- Esomeprazole Impurity 95 (CAS CATO-C4X-111295)
- Peptide Impurity 81 TFA (CAS CATO-CPTD788581)
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