4-Bromo-2-chloro-N-(1-methylpyrrolidin-2-ylidene)aniline CAS 27033-86-9
| CAS No. | 27033-86-9 |
| Molecular Formula | C11H12BrClN2 |
| Molecular Weight | 287.58 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 4-Bromo-2-chloro-N-(1-methylpyrrolidin-2-ylidene)aniline.
4-Bromo-2-chloro-N-(1-methylpyrrolidin-2-ylidene)aniline (CAS 27033-86-9), molecular formula C11H12BrClN2 and molecular weight 287.58 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H12BrClN2, 4-Bromo-2-chloro-N-(1-methylpyrrolidin-2-ylidene)aniline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 287.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C11H12BrClN2 |
| Molecular Weight | 287.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 1964 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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