| CAS No. | 91066-08-9 |
| Molecular Formula | C11H11Br2NO |
| Molecular Weight | 333.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 333.02 g/mol gives 3,4-Dibromo-1,4-dimethyl-3,4-dihydroquinolin-2(1H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3,4-Dibromo-1,4-dimethyl-3,4-dihydroquinolin-2(1H)-one (CAS 91066-08-9), molecular formula C11H11Br2NO and molecular weight 333.02 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3,4-Dibromo-1,4-dimethyl-3,4-dihydroquinolin-2(1H)-one (C11H11Br2NO) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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), 3,4-Dibromo-1,4-dimethyl-3,4-dihydroquinolin-2(1H)-one 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.
| Molecular Formula | C11H11Br2NO |
| Molecular Weight | 333.02 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 |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1983 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |