3-Bromo-2-hydroxy-5-methylbenzaldehyde CAS 33172-54-2
| CAS No. | 33172-54-2 |
| Molecular Formula | C8H7BrO2 |
| Molecular Weight | 215.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-Bromo-2-hydroxy-5-methylbenzaldehyde (C8H7BrO2) 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 215.04 g/mol, it falls into the medium-molecular-weight range. 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).
3-Bromo-2-hydroxy-5-methylbenzaldehyde (CAS 33172-54-2), molecular formula C8H7BrO2 and molecular weight 215.04 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), 3-Bromo-2-hydroxy-5-methylbenzaldehyde 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 | C8H7BrO2 |
| Molecular Weight | 215.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1966 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 6-Bromo-1,3-dihydroisobenzofuran-1-ol (CAS 100655-92-3)
- 2-Bromo-3-methoxybenzaldehyde (CAS 10401-18-0)
- 4-bromo-3-(difluoromethyl)-1-methyl-pyrazole (CAS 1089212-38-3)
- 1-(2-Bromo-5-hydroxyphenyl)ethan-1-one (CAS 1127422-81-4)
- 1-(2-Bromo-3-hydroxyphenyl)ethan-1-one (CAS 1232407-20-3)
- 2-Bromo-3-(hydroxymethyl)benzaldehyde (CAS 1255794-73-0)
- 2-Bromo-6-methoxybenzaldehyde (CAS 126712-07-0)
- 5-Bromo-2,3-dimethylcyclohexa-2,5-diene-1,4-dione (CAS 13070-27-4)
Recommended Standards
- 3-Bromo-2,5-dimethylcyclohexa-2,5-diene-1,4-dione (CAS 633318-48-6)
- 3-Bromo-2-methoxybenzaldehyde (CAS 88275-87-0)
- 3,6-Dichlorocinnolin-4-ol (CAS 872285-09-1)
- 3-Bromo-4-methoxybenzaldehyde (CAS 34841-06-0)
- 2-(5-Methyl-7-oxo-2-phenylpyrazolo[1,5-a]pyrimidin-4(7h)-yl)acetic acid (CAS 929973-45-5)
- 2,5-Dimethyl-4-nitrobenzoic acid (CAS 6954-70-7)
- 1-(3,5-Dimethoxyphenyl)cyclopentanamine (CAS 1176702-52-5)
- 1-Oxaspiro[4.5]decan-6-one (CAS 129529-81-3)
- 3-Azetidineacetic acid 1-[(1,1-dimethylethoxy)carbonyl]-3-hydroxy-, ethyl ester (CAS 1823865-53-7)
- 3-Chloro-N-ethylbenzamide (CAS 26819-09-0)
- 4-nitro-1H-indazole-3-carboxylic acid (CAS 885521-31-3)
- 5-(2-(Naphthalen-2-yl)propyl)-7H-pyrrolo[2,3-d]pyrimidine-2,4-diamine (CAS 915312-53-7)
- (N-Methyl-N-phenylamino)triphenylphosphonium Iodide (CAS 34257-63-1)
- Semaglutide (CAS 910463-68-2（free base）)
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