1-(4-Bromo-2-hydroxy-5-methoxyphenyl)-2-chloroethan-1-one CAS 299417-38-2
| CAS No. | 299417-38-2 |
| Molecular Formula | C9H8BrClO3 |
| Molecular Weight | 279.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system, 1-(4-Bromo-2-hydroxy-5-methoxyphenyl)-2-chloroethan-1-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 279.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 1-(4-Bromo-2-hydroxy-5-methoxyphenyl)-2-chloroethan-1-one (CAS 299417-38-2), a certified reference material (molecular formula C9H8BrClO3, MW 279.52 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C9H8BrClO3 |
| Molecular Weight | 279.52 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 2025 |
| Halogen Content | Cl/Br-containing |
Related Bromo Standards
- Methyl 3-bromo-5-chloro-4-methoxybenzoate (CAS 1092308-69-4)
- Methyl 2-bromo-4-chloro-5-methoxybenzoate (CAS 1138220-77-5)
- 5-Bromo-2-chloro-N-methoxy-N-methylisonicotinamide (CAS 1256790-08-5)
- 5-Bromo-3-chloro-N-methoxy-N-methylpicolinamide (CAS 1383001-27-1)
- 2-Bromo-3-chloro-4,5-dimethoxybenzaldehyde (CAS 142265-91-6)
- 4-Bromo-3-chloro-2-methoxy-benzoic acid methyl ester (CAS 1427377-54-5)
- Methyl 4-bromo-2-chloro-5-methoxybenzoate (CAS 1427437-60-2)
- 3-(2-Bromo-5-chlorophenyl)-3-hydroxypropanoic acid (CAS 1490080-24-4)
Recommended Standards
- (4-bromo-2-chloro-6-methylphenoxy)acetic acid (CAS 742094-84-4)
- 2-(2-Bromo-4-chloro-5-methylphenoxy)acetic acid (CAS 937816-96-1)
- 2-(2-Bromo-5-chlorophenoxy)acetohydrazide (CAS 1845696-05-0)
- 2-(2-Bromo-4-chlorophenoxy)propanoic acid (CAS 98590-32-0)
- Cefoxitin (CAS 35607-66-0)
- 5-((2-Methylpiperazin-1-yl)methyl)thiazole hydrochloride (CAS 1261231-76-8)
- 4-Acetyl-6-methylpicolinic acid (CAS 1393584-20-7)
- N-(4-oxothiazolidin-2-ylidene)isobutyramide (CAS 448915-09-1)
- 4-(3-methoxyphenyl)-2,3-dihydro-1,3-thiazol-2-one (CAS 116269-85-3)
- 1-(((4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperazin-1-yl)sulfonyl)methyl)-7,7-dimethylbicyclo[2.2.1]Heptan-2-one oxime (CAS 1025625-73-3)
- 2-Chloro-4-methoxy-3-methylpyridine (CAS 172152-57-7)
- 2-Benzyl-5-methyl-4-oxo-3h,4h-thieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 421562-28-9)
- 2-(Isopropylamino)-2-oxoethyl 2-amino-3-methylbenzoate (CAS 930681-16-6)
- 81988-89-8 UH11FDQ454 Ramoplanin A(sub 3) Ramoplanin A3 (S)-2-(3-Chloro-4-hydroxyphenyl)-N-(N(sup 2)-((2Z,4Z)-8-methyl-2,4-nonadienoyl)-(S)-asparaginyl-(2S,3S)-3-hydroxyasparaginyl-(R)-2-(p-hydroxyphenyl)glycyl-(R)-ornithyl-(2R,3R)-allothreonyl-2-(p-hydroxyphenyl)glycyl-2-(p-hydroxyphenyl)glycyl-(2S,3S)-allothreonyl-(S)-phenylalanyl-(R)-ornithyl-(S)-2-(p-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycyl-(2R,3R)-allothreonyl-(S)-2-(p-hydroxyphenyl)glycylglycyl-(S)-leucyl-(R)-alanyl)glycine psi1-lactone Ramoplanin A 1 (peptide moiety), 1-(N(sup 2)-methyl-1-oxo-2,4-nonadienyl)-L-asparagine)-11-(L-2-(4-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycine)-, (Z,Z)- UNII-UH11FDQ454 (CAS 81988-89-8)
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