7-Bromo-2H-indazole CAS 845751-59-9
| CAS No. | 845751-59-9 |
| Molecular Formula | C7H5BrN2 |
| Molecular Weight | 197.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7-Bromo-2H-indazole.
CATO supplies 7-Bromo-2H-indazole (CAS 845751-59-9), a certified reference material (molecular formula C7H5BrN2, MW 197.03 g/mol) for analytical method development and quality control.
Structurally, 7-Bromo-2H-indazole (C7H5BrN2) contains a nitrile group, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 197.03 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 7-Bromo-2H-indazole 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 | C7H5BrN2 |
| Molecular Weight | 197.03 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1H-pyrrolo[3,2-c]pyridine (CAS 1000342-68-6)
- 6-Bromo-5-azaindole, 97% (CAS 1000342-71-1)
- 2-Bromo-5-cyano-6-picoline (CAS 1003711-39-4)
- 2-Bromo-1H-pyrrolo[2,3-b]pyridine (CAS 1083181-25-2)
- Methyl 2-bromo-4-hydroxybutanoate (CAS 111044-01-0)
- 2-Bromo-6-(cyanomethyl)pyridine (CAS 112575-11-8)
- 3-Bromo-3H-pyrrolo[2,3-b]pyridine (CAS 1160790-59-9)
- 5-Bromo-6-methylpicolinonitrile (CAS 1173897-86-3)
Recommended Standards
- 7-Bromo-1H-indazole (CAS 53857-58-2)
- 7-Bromoimidazo[1,5-a]pyridine (CAS 865156-48-5)
- 6-Bromoindazole (CAS 79762-54-2)
- 7-Bromopyrrolo[1,2-c]pyrimidine (CAS 251102-32-6)
- 2-Ethoxy-4-formylphenyl 4-methoxybenzoate (CAS 443729-96-2)
- 2-(Ethylthio)phenylboronic acid (CAS 362045-33-8)
- 1-Bromo-4-((2-ethylhexyl)oxy)benzene (CAS 164352-24-3)
- Milnacipran Impurity 4 (CAS 810696-16-3)
- Alogliptin Impurity 72 (CAS CATO-C4X-109972)
- Rel-tert-butyl ((6r,9r)-1-oxa-4-azaspiro[5.5]undecan-9-yl)carbamate (CAS 2137078-64-7)
- 3-Iodo-4-nitropyridine (CAS 89283-70-5)
- Ethyl 5-(4-((2,5-dihydro-1H-pyrrol-1-yl)methyl)phenyl)-5-oxopentanoate (CAS 898764-91-5)
- 6-Amino-5-nitropyridin-2-one (CAS 211555-30-5)
- Biotinyl-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802086-28-7)
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