3-Bromo-7,8-dihydro-4H,6H-pyrazolo[5,1-c][1,4]oxazepine CAS 2409127-69-9
| CAS No. | 2409127-69-9 |
| Molecular Formula | C7H9BrN2O |
| Molecular Weight | 217.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-Bromo-7,8-dihydro-4H,6H-pyrazolo[5,1-c][1,4]oxazepine (CAS 2409127-69-9), a certified reference material (molecular formula C7H9BrN2O, MW 217.06 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, 3-Bromo-7,8-dihydro-4H,6H-pyrazolo[5,1-c][1,4]oxazepine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 217.06 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).
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 | C7H9BrN2O |
| Molecular Weight | 217.06 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 2-Bromo-1-(1,3-dimethyl-1H-pyrazol-5-yl)ethan-1-one (CAS 1015936-63-6)
- 6-Bromo-5-ethoxypyridin-3-amine (CAS 1020253-84-2)
- 3-Bromo-5-ethoxyphenol (CAS 1026796-70-2)
- 2-Bromo-6-isopropoxypyrazine (CAS 1027512-85-1)
- 4-Bromo-1-(tetrahydrofuran-3-yl)-1H-pyrazole (CAS 1040377-07-8)
- 4-Bromo-5-methoxy-1,2-benzenediamine (CAS 108447-01-4)
- 4-Bromo-N-ethyl-1h-pyrrole-2-carboxamide (CAS 1153795-60-8)
- 4-Bromo-3-methoxybenzene-1,2-diamine (CAS 1162696-92-5)
Recommended Standards
- 3-Bromo-6-methoxybenzene-1,2-diamine (CAS 860465-93-6)
- 4-(2-Bromoethoxy)phenol (CAS 31406-95-8)
- 3-Bromo-5-methoxybenzyl alcohol (CAS 262450-64-6)
- 4-(2-Bromoethyl)benzene-1,2-diol (CAS 220556-03-6)
- 1-Fluoronaphthalen-2-ol (CAS 51417-63-1)
- 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)phenol (CAS 1243143-45-4)
- 3-Bromo-1-(piperidin-1-yl)propan-1-one (CAS 90154-52-2)
- N,N,3-trimethylbutanamide (CAS 5370-28-5)
- 1,2-Benzisoxazole-5-carboxylic Acid (CAS 933744-95-7)
- 1,3-Diisopropylimidazole chloride (CAS 139143-09-2)
- 4-Chloro-6-fluoronicotinic acid (CAS 1211525-00-6)
- 5-[(4-chlorophenoxy)methyl]-1h-1,2,3,4-tetrazole (CAS 24896-24-0)
- 2-(5-Bromopyridin-3-yl)propan-2-amine (CAS 1211519-20-8)
- Acetyl Hexapeptide-39 (CAS 1382088-38-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com