Deucravacitinib Impurity 18 CAS 1609392-27-9
| CAS No. | 1609392-27-9 |
| Molecular Formula | - |
| Molecular Weight | 425.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Deucravacitinib Impurity 18 (C20H19D3N8O3) contains deuterium isotope labeling, a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.5, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 425.46 g/mol, it falls into the moderately-high-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).
Deucravacitinib Impurity 18 (CAS 1609392-27-9) is a certified pharmaceutical impurity reference standard with the molecular formula C20H19D3N8O3 and a molecular weight of 425.46 g/mol.
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 | C20H19D3N8O3 |
| Molecular Weight | 425.46 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 8 |
Related Deucravacitinib Standards
- Deucravacitinib Impurity 15 (CAS 2417137-50-7)
- Deucravacitinib Impurity 16 (CAS 2936652-48-9)
- Deucravacitinib Impurity 13 (CAS 2245111-18-4)
- Deucravacitinib Impurity 14 (CAS 1609394-23-1)
- Deucravacitinib Impurity 2 (CAS CATO-C4X-31382)
- Deucravacitinib Impurity 8 (CAS CATO-C4X-31388)
- Deucravacitinib Impurity 10 (CAS 2245111-21-9)
- Deucravacitinib Impurity 4 (CAS CATO-C4X-31384)
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