4-Bromophenoxyacetic Acid CAS 1878-91-7
| CAS No. | 1878-91-7 |
| Molecular Formula | C8H7BrO3 |
| Molecular Weight | 231.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Bromophenoxyacetic Acid 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.
4-Bromophenoxyacetic Acid (CAS 1878-91-7), molecular formula C8H7BrO3 and molecular weight 231.04 g/mol, is a CATO reference standard with documented purity and traceability.
4-Bromophenoxyacetic Acid (C8H7BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | >95% |
| 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.) | 1957 |
| Halogen Content | Br-containing |
Recommended Standards
- Di-beta,beta'-Chloroethylphosphoric Acid-d8 (CAS 1477495-02-5)
- 3-Bromo-2-methyl-5-nitroaniline (CAS 1000342-34-6)
- Terbutaline Impurity 66 (CAS 29415-97-2)
- Methyl 6-(bromomethyl)pyrazine-2-carboxylate (CAS 1006619-40-4)
- 1-(2,3-Dimethylphenyl)-3,3-dimethylbutan-1-one (CAS 898764-44-8)
- 3-Oxo-4-(2-trifluoromethylphenyl)butanoyl chloride (CAS 1993310-15-8)
- (E)-4-Chlorobut-2-en-1-ol (CAS 1775-39-9)
- 1-(5-Amino-2-hydroxy-4-methoxyphenyl)ethanone (CAS 93483-92-2)
- 2,6-Dichloronicotinyl Chloride (CAS 58584-83-1)
- 2-(1-Benzylpiperidin-4-yl)ethanamine dihydrochloride (CAS 125482-75-9)
- N,N-dimethyl-4-(4-phenylpiperazin-1-yl)-6-(trifluoromethyl)pyrimidin-2-amine (CAS 339105-48-5)
- 2-(2-Chlorophenoxy)acetimidamide hydrochloride (CAS 58403-03-5)
- Finerenone Impurity 246 (CAS CATO-C4X-2880246)
- Pancreatic Polypeptide (rat) (CAS 90419-12-8)
Why CATO?
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