(8-Bromo-3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)(phenyl)methanone CAS 175136-38-6
| CAS No. | 175136-38-6 |
| Molecular Formula | C16H13BrO3 |
| Molecular Weight | 333.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(8-Bromo-3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)(phenyl)methanone (CAS 175136-38-6), molecular formula C16H13BrO3 and molecular weight 333.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H13BrO3, (8-Bromo-3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)(phenyl)methanone contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 333.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C16H13BrO3 |
| Molecular Weight | 333.18 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | Br-containing |
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Recommended Standards
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- (E)-3-(4-((4-bromobenzyl)oxy)phenyl)acrylic acid (CAS 385383-36-8)
- 1,2-Bis(1H-benzo[d][1,2,3]triazol-1-yl)-1,2-dichloroethane (CAS 131543-68-5)
- 4-(5-Bromo-4-methyl-thiazol-2-yl)-1-isopropyl-piperidine (CAS 1361116-64-4)
- (2-Methoxy-5-nitrophenyl)hydrazine (CAS 94829-98-8)
- n-Phenyl-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxamide (CAS 353460-91-0)
- 3-Bromo-3-methylpiperidin-2-one (CAS 83402-45-3)
- (R)-1-(4-bromophenyl)pentan-1-amine (CAS 1228542-91-3)
- 1-(Bromomethyl)-1-(cyclopentyloxy)cyclohexane (CAS 1249706-76-0)
- 4-(Benzo[d][1,3]dioxol-5-yloxy)-1H-pyrazole (CAS 1429902-41-9)
- 1-Oxopropan-2-yl acetate (CAS 22094-23-1)
- N-(5-Acetyl-4-phenylthiazol-2-yl)-4-(ethylsulfonyl)benzamide (CAS 941959-67-7)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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