1-(4-Bromo-3-fluorobenzyl)-4-((tert-butyldiphenylsilyl)oxy)piperidine CAS 1704096-73-0
| CAS No. | 1704096-73-0 |
| Molecular Formula | C28H33BrFNOSi |
| Molecular Weight | 526.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(4-Bromo-3-fluorobenzyl)-4-((tert-butyldiphenylsilyl)oxy)piperidine (CAS 1704096-73-0), molecular formula C28H33BrFNOSi and molecular weight 526.56 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, 1-(4-Bromo-3-fluorobenzyl)-4-((tert-butyldiphenylsilyl)oxy)piperidine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 526.56 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.
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 | C28H33BrFNOSi |
| Molecular Weight | 526.56 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
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- 4-(3-Bromo-5-ethoxy-4-hydroxyphenyl)-N-(2-methoxyphenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamide (CAS 494195-84-5)
- 5-Bromo-5a-cholestane-3,6-diol 3-Acetate (CAS 1258-35-1)
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- 3-(3-(4'-Bromo-[1,1'-biphenyl]-4-yl)-3-oxo-1-phenylpropyl)-4-hydroxy-2H-chromen-2-one (CAS 28614-07-5)
Recommended Standards
- Belumosudil Impurity 48 (CAS CATO-C4X-298848)
- 2-((3-Cyano-4-(3,4-dimethoxyphenyl)-6-phenylpyridin-2-yl)thio)-N-(3-nitrophenyl)acetamide (CAS 332018-57-2)
- Cefazolin Impurity 24 (CAS CATO-C4X-157724)
- 2-((3-Cyano-4-(3,4-dimethoxyphenyl)-6-phenylpyridin-2-yl)thio)-N-(4-nitrophenyl)acetamide (CAS 332018-56-1)
- 6-Amino-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid hydrochloride (CAS 228728-09-4)
- Sulfamethomidine (CAS 3772-76-7)
- 4-Chloro-2-(p-tolyl)quinoline-6-sulfonyl fluoride (CAS 31241-73-3)
- Oxacillin Impurity 33 (CAS 5053-35-0（free base）)
- (2-Fluoro-5-(3-methylpiperidine-1-carbonyl)phenyl)boronic acid (CAS 2096338-09-7)
- 6-Chloro-4-(difluoromethyl)-5-methylpicolinonitrile (CAS 1807029-95-3)
- 4-(1-Allyl-2,5-dimethyl-1h-pyrrol-3-yl)thiazol-2-amine hydrochloride (CAS 1049717-89-6)
- 4-Chloro-7-methylthieno[3,2-d]pyrimidine-6-carboxylic acid (CAS 1431412-39-3)
- 2,3-Difluoro-5-(trimethylsilyl)benzoic acid (CAS 518070-18-3)
- Semaglutide impurity 210 (CAS CATO-C4X-2226210)
Why CATO?
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