2-Bromo-1-(2-hydroxy-5-methoxyphenyl)ethanone CAS 203524-87-2
| CAS No. | 203524-87-2 |
| Molecular Formula | C9H9BrO3 |
| Molecular Weight | 245.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Bromo-1-(2-hydroxy-5-methoxyphenyl)ethanone (CAS 203524-87-2) is a high-purity analytical reference standard with the molecular formula C9H9BrO3 and a molecular weight of 245.07 g/mol.
Structurally, 2-Bromo-1-(2-hydroxy-5-methoxyphenyl)ethanone (C9H9BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 245.07 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2-Bromo-1-(2-hydroxy-5-methoxyphenyl)ethanone 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 | C9H9BrO3 |
| Molecular Weight | 245.07 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | Br-containing |
Related Bromo Standards
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Recommended Standards
- 2-Bromo-1-(2-hydroxy-4-methoxyphenyl)ethan-1-one (CAS 60965-24-4)
- 2-Bromo-1-(3-hydroxy-4-methoxyphenyl)ethanone (CAS 90971-90-7)
- 2-Amino-3-(6-bromopyridin-3-yl)propanoic acid (CAS 32938-58-2)
- 2-Bromo-1-(4-hydroxy-3-methoxyphenyl)ethan-1-one (CAS 69638-06-8)
- 1-(3-Chloro-2-hydroxypropyl)-3,5-bis(oxiranylmethyl)-1,3.5-triazine-2,4,6(1H,3H,5H)-trione (CAS 78627-42-6)
- Cdk1/2 Inhibitor III (CAS 443798-47-8)
- 4-(4-(Tert-butyl)phenyl)-2,2-dimethyl-4-oxobutanoic acid (CAS 951893-29-1)
- 1-(2,4-dimethoxyphenyl)-2,2,2-trifluoroethanone 1-(2,4-dimethoxyphenyl)-2,2,2-tris(fluoranyl)ethanone 578-16-5 A831619 (CAS 578-16-5)
- Methyl 3-chloro-5-methylisonicotinate (CAS 1256791-82-8)
- N-(5-bromopyridin-3-yl)propane-2-sulfonamide (CAS 1093819-33-0)
- 1-Fluoro-4-(phenylsulfonyl)benzene (CAS 312-31-2)
- 28240-70-2 CTK4G1068 Phosphonous dichloride,P,P'-(1,3-propanediyl)bis- (CAS 28240-70-2)
- 2-(4-(Aminomethyl)-3-chloro-6-(difluoromethyl)pyridin-2-yl)acetic acid (CAS 1805076-94-1)
- D-allo-Thr7-Semaglutide (CAS CATO-C4X-2226242)
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