1-Bromo-4-ethynyl-2-methoxybenzene CAS 69151-17-3
| CAS No. | 69151-17-3 |
| Molecular Formula | C9H7BrO |
| Molecular Weight | 211.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 1-Bromo-4-ethynyl-2-methoxybenzene (CAS 69151-17-3), a certified reference material (molecular formula C9H7BrO, MW 211.06 g/mol) for analytical method development and quality control.
Owing to a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 1-Bromo-4-ethynyl-2-methoxybenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 211.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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.) | 1976 |
| Halogen Content | Br-containing |
Related Bromo Standards
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- 3-Bromo-4-methyl-1H-pyrrolo[3,2-c]pyridine (CAS 1000342-72-2)
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Recommended Standards
- 1-Bromo-4-(prop-2-yn-1-yloxy)benzene (CAS 33133-45-8)
- 2-(2-Amino-5-bromophenyl)acetonitrile, 97% (CAS 882855-95-0)
- 1-Bromo-3-methylimidazo[1,5-a]pyridine (CAS 61254-44-2)
- 2-(4-Amino-3-bromophenyl)acetonitrile (CAS 882855-96-1)
- Ethyl 3-(4-fluoro-2-nitrophenyl)-2-oxopropanoate (CAS 346-43-0)
- Camphor Sulfonic Acid Ethyl Ester (CAS CATO-C4X-21141)
- 4-(3-Iodophenyl)-1h-pyrazole (CAS 1399654-75-1)
- Methiocarb Sulfone (CAS 2179-25-1)
- Ethyl (3-chloro-4-fluorophenyl)glycinate (CAS 2344-98-1)
- (R)-5-Chloro-2-(5-methyl-1,4-diazepan-1-yl)benzo[d]oxazole (CAS 1266975-27-2)
- (E)-3-(2-Chloro-4-methylphenyl)acrylic acid (CAS 1021949-53-0)
- 6-Chloro-2,5-dimethyl-3-phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 879457-80-4)
- 2-((tert-Butylamino)methyl)-5-((7-chloroquinolin-4-yl)amino)phenol dihydrochloride (CAS 1010411-21-8)
- D-[Phe]6-Semaglutide (CAS CATO-CPTD788633)
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