t-Butyl 4-(2-bromo-4-nitrophenoxy)piperidine-1-carboxylate CAS 337520-16-8
| CAS No. | 337520-16-8 |
| Molecular Formula | C16H21BrN2O5 |
| Molecular Weight | 401.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies t-Butyl 4-(2-bromo-4-nitrophenoxy)piperidine-1-carboxylate (CAS 337520-16-8), a certified reference material (molecular formula C16H21BrN2O5, MW 401.25 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, t-Butyl 4-(2-bromo-4-nitrophenoxy)piperidine-1-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 401.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C16H21BrN2O5 |
| Molecular Weight | 401.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- Ethyl 4-(4-bromophenyl)-6-hydroxy-2-phenyl-4,5-dihydropyrimidine-5-carboxylate (CAS 477867-22-4)
- Tert-butyl 4-((5-bromo-3-nitropyridin-2-yl)amino)piperidine-1-carboxylate (CAS 1127119-18-9)
- Ethyl 4-(3-bromophenyl)-6-hydroxy-2-phenyl-4,5-dihydropyrimidine-5-carboxylate (CAS 400078-27-5)
- 3-(benzylsulfonyl)-2,3-dichloro-N-(6-methoxy-3-pyridinyl)acrylamide (CAS 1164476-67-8)
- 2-Fluorocyclopropanamine 4-methylbenzenesulfonic acid (CAS 417725-06-5)
- 25736-61-2 2,5-Furandione, polymer with ethenylbenzene, sodium salt (CAS 25736-61-2)
- 2,3-dihydro-[1,4]dioxino[2,3-b]pyridine-7-sulfonyl chloride (CAS 1823887-47-3)
- 4-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzene-1-sulfonyl chloride (CAS 36898-42-7)
- 4-((2-(Piperidin-2-yl)ethyl)sulfonyl)morpholine (CAS 1183010-67-4)
- 3-{4-[(3-Fluorobenzyl)oxy]phenyl}acrylic acid (CAS 423752-10-7)
- 3-iodo-1,5-dimethyl-pyrazole (CAS 1354706-38-9)
- Ethyl 4-chloro-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-2-carboxylate (CAS 40106-51-2)
- 3-Phenylsulfonamidopyridine-5-boronic acid pinacol ester, >96% (CAS 1083326-28-6)
- [5-31]-Semaglutide (CAS CATO-C4X-2226263)
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