1-Bromo-2-(4-methoxyphenyl)acetylene CAS 33675-41-1
| CAS No. | 33675-41-1 |
| Molecular Formula | C9H7BrO |
| Molecular Weight | 211.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Bromo-2-(4-methoxyphenyl)acetylene (C9H7BrO) contains a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
1-Bromo-2-(4-methoxyphenyl)acetylene (CAS 33675-41-1), molecular formula C9H7BrO and molecular weight 211.06 g/mol, is a CATO reference standard with documented purity and traceability.
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), 1-Bromo-2-(4-methoxyphenyl)acetylene 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 | C9H7BrO |
| Molecular Weight | 211.06 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1966 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 4-Bromo-6-methyl-7-azaindole (CAS 1000340-58-8)
- 3-Bromo-7-methyl-1H-pyrrolo[3,2-c]pyridine (CAS 1000341-40-1)
- 3-Bromo-4-methyl-1H-pyrrolo[3,2-c]pyridine (CAS 1000342-72-2)
- 6-Bromo-5-methyl-1H-indazole (CAS 1000343-69-0)
- 7-Bromo-1-methylindazole (CAS 1000576-59-9)
- 1-Bromo-2-ethynyl-4-methoxybenzene (CAS 1011736-13-2)
- 4-Bromo-2-methyl-7-azaindole (CAS 1014613-64-9)
- 3-Bromo-1-phenylprop-2-yn-1-ol (CAS 10508-57-3)
Recommended Standards
- 1-Bromo-2-(3-methoxyphenyl)acetylene (CAS 33675-45-5)
- 1-Bromo-2-(prop-2-yn-1-yloxy)benzene (CAS 38770-76-2)
- 1-Bromo-2-(2-methoxyphenyl)acetylene (CAS 199165-20-3)
- 1-Bromo-2-ethynyl-3-methoxybenzene (CAS 2196194-31-5)
- tert-Butyl (5-(hydroxymethyl)pyrimidin-2-yl)carbamate (CAS 2137923-72-7)
- 2-({[(4-methylphenyl)methyl]carbamoyl}methanesulfonyl)acetic acid (CAS 344275-44-1)
- 6-Amino-1,3-dimethyl-5-((2-morpholinoethyl)amino)pyrimidine-2,4(1H,3H)-dione (CAS 1713463-68-3)
- (4-Ethoxynaphthalen-2-yl)methanamine (CAS 1707375-45-8)
- Baloxavir Marboxil Impurity 154 (CAS CATO-C4X-2108154)
- 4-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid (CAS 176486-83-8)
- 1-(4,6-diamino-1,3,5-triazin-2-yl)urea (CAS 16439-79-5)
- N-Hexyl-4,5-dihydro-1,3-thiazol-2-amine (CAS 76495-22-2)
- 2-Fluoro-6-methyl-4-nitroaniline (CAS 1426805-91-5)
- Peptide 442 (CAS CATO-CPTD788442)
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