4-Bromo-2-hydroxy-5-methoxybenzaldehyde CAS 63272-66-2
| CAS No. | 63272-66-2 |
| Molecular Formula | C8H7BrO3 |
| Molecular Weight | 231.04 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.
4-Bromo-2-hydroxy-5-methoxybenzaldehyde (CAS 63272-66-2), molecular formula C8H7BrO3 and molecular weight 231.04 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 4-Bromo-2-hydroxy-5-methoxybenzaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 231.04 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).
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 | C8H7BrO3 |
| Molecular Weight | 231.04 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.) | 1975 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 3-Bromo-2-methoxybenzoic Acid (CAS 101084-39-3)
- Methyl 2-bromo-4-hydroxybenzoate (CAS 101085-03-4)
- Methyl 4-bromo-3-hydroxybenzoate (CAS 106291-80-9)
- 2-Bromo-3-hydroxy-5-methoxybenzaldehyde (CAS 108791-60-2)
- Methyl 2-bromo-6-hydroxybenzoate (CAS 113763-37-4)
- 2-Bromo-3-(hydroxymethyl)benzoic acid (CAS 1187238-18-1)
- 2-Bromo-5-(hydroxymethyl)benzoic acid (CAS 1187238-21-6)
- 2-Bromo-5-hydroxy-4-methylbenzoic acid (CAS 1195323-34-2)
Recommended Standards
- 4-Bromo-2-(hydroxymethyl)benzoic Acid (CAS 670256-21-0)
- 4-Bromo-2-methoxybenzoic Acid (CAS 72135-36-5)
- 4-Bromo-1,1-difluoro-1H-indene (CAS 2359693-26-6)
- 4-Bromo-3-(hydroxymethyl)benzoic acid (CAS 790230-04-5)
- ethyl (4-iodophenoxy)acetate (CAS 90794-33-5)
- 4-Amino-2-nitrobenzaldehyde (CAS 102170-39-8)
- tert-Butyl 4-Bromobenzoate (CAS 59247-47-1)
- Tert-butyl (4S)-4-[(4-fluorophenyl)methyl]-2,2-dioxo-oxathiazolidine-3-carboxylate (CAS 2761225-72-1)
- sibiricose A5 (CAS 107912-97-0)
- Ethyl 4-amino-2-ethoxypyrimidine-5-carboxylate (CAS 98961-26-3)
- N-(2,6-dimethyl-4-nitrophenyl)methanesulfonamide (CAS 632300-21-1)
- (R)-tert-Butyl 2-((4-chlorobenzyl)carbamoyl)pyrrolidine-1-carboxylate (CAS 1140495-84-6)
- 5-(Trifluoromethyl)thiophene-3-sulfonyl chloride (CAS 1034047-33-0)
- Insulin B (22-25) (CAS 34367-73-2)
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