Dienogest EP Impurity M CAS 98149-13-4
| CAS No. | 98149-13-4 |
| Molecular Formula | C20H24BrNO2 |
| Molecular Weight | 390.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Dienogest EP Impurity M (CAS 98149-13-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H24BrNO2 and a molecular weight of 390.31 g/mol.
The molecular framework of Dienogest EP Impurity M (C20H24BrNO2) is characterized by a steroid core, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C20H24BrNO2 |
| Molecular Weight | 390.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Dienogest Standards
- Dienogest Impurity 17 (CAS 83196-58-1)
- Dienogest EP Impurity E (CAS 102193-41-9)
- Dienogest EP Impurity D (CAS 190662-30-7)
- Dienogest EP Impurity K (CAS 106111-43-7)
- Dienogest Impurity 15 (CAS CATO-C4X-229515)
- Dienogest Impurity 20 (CAS 34686-78-9)
- Dienogest EP Impurity A (CAS 86153-39-1)
- Dienogest EP Impurity J (CAS 24284-84-2)
Recommended Standards
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