7-bromo-3-chloro-1H-indazole CAS 885271-75-0
| CAS No. | 885271-75-0 |
| Molecular Formula | C7H12BrClN2 |
| Molecular Weight | 239.54 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.
7-bromo-3-chloro-1H-indazole (CAS 885271-75-0) is a high-purity analytical reference standard with the molecular formula C7H12BrClN2 and a molecular weight of 239.54 g/mol.
The molecular framework of 7-bromo-3-chloro-1H-indazole (C7H12BrClN2) is characterized by a nitrile group, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C7H12BrClN2 |
| Molecular Weight | 239.54 g/mol |
| 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
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Recommended Standards
- 6-bromo-8-chloro-imidazo[1,2-a]pyridine (CAS 474708-88-8)
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- Semaglutide Impurity 157 (x TFA Salt) (CAS CATO-C4X-2226157)
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