1,5-Bis(bromomethyl)naphthalene CAS 21646-18-4
| CAS No. | 21646-18-4 |
| Molecular Formula | C12H10Br2 |
| Molecular Weight | 314.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1,5-Bis(bromomethyl)naphthalene 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.
1,5-Bis(bromomethyl)naphthalene (CAS 21646-18-4), molecular formula C12H10Br2 and molecular weight 314.02 g/mol, is a CATO reference standard with documented purity and traceability.
1,5-Bis(bromomethyl)naphthalene (C12H10Br2) contains bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C12H10Br2 |
| Molecular Weight | 314.02 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
Related Bis Standards
- 1,2-Bis(bromomethyl)naphthalene (CAS 59882-98-3)
- 1,4-Bis(bromomethyl)naphthalene (CAS 58791-49-4)
- 1,8-Bis(bromomethyl)naphthalene (CAS 2025-95-8)
- 1,4-Bis(bromomethyl)-2,5-dicyanobenzene (CAS 64746-04-9)
- 5-(Bromomethyl)-2-(dimethoxymethyl)-3-(trifluoromethyl)pyridine (CAS 2853569-83-0)
- 4-(Bromomethyl)-2,5-diphenyloxazole (CAS 133130-86-6)
- 6-(Bromomethyl)-4-(3-methoxypropyl)-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 911705-42-5)
- 1-[2-(bromomethyl)-4,4-dimethyl-1-cyclohexen-1-ly]-4-chloro-Benzene (CAS 1027345-22-7)
Recommended Standards
- 1,5-Dibromo-2,6-dimethylnaphthalene (CAS 20027-95-6)
- 1-(1,2-Dibromoethyl)naphthalene (CAS 31838-47-8)
- 3-(Difluoromethoxy)-2-iodobenzoic acid (CAS 2383082-26-4)
- 3-(Difluoromethoxy)-4-iodobenzoic acid (CAS 1695687-68-3)
- 4-Allyl-3-(benzylthio)-5-(furan-2-yl)-4H-1,2,4-triazole (CAS 587001-94-3)
- (4-Chloro-6-methylpyrimidin-2-yl)methanamine hydrochloride (CAS 1196152-23-4)
- Methyl 2-Bromo-2-(4-fluorophenyl)acetate (CAS 71783-54-5)
- Ethyl 3-chloro-4-iodobenzoate (CAS 874831-02-4)
- 6-Methoxy-2-methyl-1H-indole-3-carbaldehyde (CAS 4147-43-7)
- 4-(Thiomorpholine-4-carbonyl)benzonitrile (CAS 1042784-77-9)
- 3-(1,3-Dioxo-2,3-dihydro-1H-isoindol-2-yl)-2,2-difluoropropanoic acid (CAS 541547-40-4)
- 5-Methanesulfonyl-2-methoxyaniline (CAS 20945-70-4)
- Yttrium, octaaquabis[μ-[sulfato(2-)-κO:κO′]][sulfato(2-)-κO]di- (CAS 599170-80-6)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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