4-Bromobenzo[d]oxazole CAS 217326-65-3
| CAS No. | 217326-65-3 |
| Molecular Formula | C7H4BrNO |
| Molecular Weight | 198.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Bromobenzo[d]oxazole 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.
CATO supplies 4-Bromobenzo[d]oxazole (CAS 217326-65-3), a certified reference material (molecular formula C7H4BrNO, MW 198.02 g/mol) for analytical method development and quality control.
Owing to an amide group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 4-Bromobenzo[d]oxazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 198.02 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).
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 | C7H4BrNO |
| Molecular Weight | 198.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromobenzo Standards
- 4-Bromobenzo[d]isoxazole (CAS 1126848-34-7)
- 6-Bromobenzo[c]isoxazole (CAS 139557-44-1)
- 6-Bromobenzo[d]oxazole (CAS 375369-14-5)
- 4-Bromobenzo[c][1,2,5]oxadiazole (CAS 35036-93-2)
- 7-Bromobenzo[b]thiophene-2-carboxylic acid (CAS 918511-92-9)
- 6-Bromobenzo[e][1,2,4]triazine (CAS 1146293-11-9)
- 7-Bromobenzo[d]isoxazol-3-amine (CAS 1260860-32-9)
- 6-Bromobenzo[d]isoxazol-3-amine (CAS 177995-39-0)
Recommended Standards
- 4-Bromo-7H-pyrrolo[2,3-d]pyrimidine (CAS 889939-42-8)
- 5-Amino-3-bromopicolinonitrile (CAS 573762-88-6)
- 4-Bromo-5H-pyrrolo[3,2-d]pyrimidine (CAS 916213-53-1)
- 5-Bromo-1,2-benzisoxazole (CAS 837392-65-1)
- (3,4,5-Trimethoxyphenyl)acetic-2,2-d2 Acid (CAS 344299-45-2)
- 6-Fluoro-2-methylquinoline-5-carboxylic acid (CAS 86053-13-6)
- 1-(3-Chlorophenyl)cyclobutanemethanamine (CAS 115816-34-7)
- 2-Amino-2-(3-hydroxy-4-methoxyphenyl)acetic acid (CAS 368858-99-5)
- 1,6-Diazaspiro[3.4]Octan-2-one (CAS 1420966-53-5)
- 2-(2-Cyano-4-(difluoromethyl)-5-nitropyridin-3-yl)acetic acid (CAS 1805488-40-7)
- 4-Bromo-2-chloro-5-fluoroaniline (CAS 1000572-63-3)
- (S)-3-Amino-9-chloro-5-methyl-2,3-dihydrobenzo[b][1,4]oxazepin-4(5H)-one hydrochloride (CAS 2125480-81-9)
- Methyl 6-hydroxyquinoline-4-carboxylate (CAS 51043-76-6)
- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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