(2-Bromo-4-methylphenyl)hydrazine CAS 67156-57-4
| CAS No. | 67156-57-4 |
| Molecular Formula | C7H9BrN2 |
| Molecular Weight | 201.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(2-Bromo-4-methylphenyl)hydrazine (CAS 67156-57-4), molecular formula C7H9BrN2 and molecular weight 201.06 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H9BrN2, (2-Bromo-4-methylphenyl)hydrazine contains a nitrile group, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 201.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C7H9BrN2 |
| Molecular Weight | 201.06 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.) | 1976 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- (2-Bromo-3-methylphenyl)hydrazine (CAS 274907-04-9)
- (2-bromo-5-methylphenyl)hydrazine (CAS 90084-71-2)
- 3-(Bromomethyl)-2,5-dimethylpyrazine (CAS 1936294-46-0)
- (2-Bromo-5-methylphenyl)methanol (CAS 727985-37-7)
- N-(4-(3-Methyl-3H-naphtho[1,2-d]imidazol-2-yl)phenyl)acetamide (CAS 76145-65-8)
- Butyl[(4-fluorophenyl)methyl]amine (CAS 60509-35-5)
- n-((1-Ethyl-1h-pyrazol-5-yl)methyl)-2-methoxyethan-1-amine (CAS 1342048-09-2)
- 2-(Benzo[d][1,3]dioxol-5-yl)-6-ethoxy-2H-benzo[d][1,2,3]triazol-5-amine (CAS 1706445-69-3)
- 2-(3-fluorophenyl)cyclopropane-1-sulfonyl chloride (CAS 1258884-77-3)
- N1-Ethyl-N3-(1-phenylethyl)-1,3-propanediamine (CAS 1040690-12-7)
- (5-Chloro-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl tosylcarbamate (CAS 282523-54-0)
- 4-Amino-5-bromo-1-methyl-1,2-dihydropyridin-2-one hydrochloride (CAS 2126176-92-7)
- Methyl 4-bromo-3-fluoropicolinate (CAS 1805503-11-0)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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