1-Bromo-5-methylnaphthalene CAS 20366-59-0
| CAS No. | 20366-59-0 |
| Molecular Formula | C11H9Br |
| Molecular Weight | 221.09 g/mol |
| 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 1-Bromo-5-methylnaphthalene.
CATO supplies 1-Bromo-5-methylnaphthalene (CAS 20366-59-0), a certified reference material (molecular formula C11H9Br, MW 221.09 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H9Br, 1-Bromo-5-methylnaphthalene contains bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 221.09 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1-Bromo-5-methylnaphthalene 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 | C11H9Br |
| Molecular Weight | 221.09 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 4-Bromo-2-fluoro-5-methylbenzenethiol (CAS 1011460-49-3)
- (2-Bromo-4-fluorophenyl)methanethiol (CAS 1016506-12-9)
- 5-Bromo-2-fluoro-4-methyl-benzenethiol (CAS 108404-38-2)
- 2-Bromo-1-(4-methylpiperazin-1-yl)ethan-1-one (CAS 112257-15-5)
- 3-Bromo-1-methylnaphthalene (CAS 112929-89-2)
- 2-Bromo-1-(oxan-4-yl)propan-1-one (CAS 1187468-69-4)
- 6-Bromo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine (CAS 1203499-17-5)
- 8-Bromo-2,3-dihydro-1H-pyrido[3,4-b][1,4]oxazine (CAS 1203499-19-7)
Recommended Standards
- 1-Bromo-3-methylnaphthalene (CAS 54357-18-5)
- 1-Bromo-6-methylnaphthalene (CAS 68251-76-3)
- 1-Bromo-3-fluoro-5-(methylsulfanyl)benzene (CAS 453566-03-5)
- 1-Bromo-7-methylnaphthalene (CAS 7511-27-5)
- Trimethoprim Impurity 6 (CAS 7520-69-6)
- 4-(3-Chlorophenyl)pyridin-3-amine (CAS 1374664-78-4)
- 1-Bromo-2,2,5-trimethylhexane (CAS 1466562-36-6)
- 4-{[6-(piperazin-1-yl)pyridin-3-yl]sulfonyl}morpholine (CAS 923209-26-1)
- Empagliflozin Impurity 131 (CAS CATO-C4X-1065131)
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-bromopent-4-enoic acid (CAS 220497-92-7)
- Mivacurium chloride Impurity 60 (CAS CATO-C4X-137560)
- 5'-Fluoro-2'-methoxy-[1,1'-biphenyl]-3-carbaldehyde (CAS 1178297-54-5)
- 2-Acetyl-5-nitroisoindoline-1,3-dione (CAS 60283-87-6)
- Semaglutide Impurity 129 (CAS 2490269-79-7)
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