3-Bromo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepine CAS 1373223-55-2
| CAS No. | 1373223-55-2 |
| Molecular Formula | C8H11BrN2 |
| Molecular Weight | 215.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Bromo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepine (CAS 1373223-55-2), molecular formula C8H11BrN2 and molecular weight 215.09 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Bromo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepine (C8H11BrN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 215.09 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 3-Bromo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a]azepine 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.
Physical & Chemical Properties
| Molecular Formula | C8H11BrN2 |
| Molecular Weight | 215.09 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.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- N-(3,4-Dimethoxyphenethyl)pyrimidin-2-amine (CAS 864434-18-4)
- 1-(4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperazin-1-yl)-2-(4-(4-methoxyphenyl)piperazin-1-yl)ethan-1-one (CAS 338979-18-3)
- (1S,4S)-2-Oxa-5-azabicyclo[2.2.1]heptane (CAS 547716-11-0)
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