Ribociclib Impurity 44 CAS CATO-C4X-310044
| CAS No. | CATO-C4X-310044 |
| Molecular Formula | C26H33N7O4 |
| Molecular Weight | 507.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Ribociclib Impurity 44 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.
Ribociclib Impurity 44 (CAS CATO-C4X-310044) is a certified pharmaceutical impurity reference standard with the molecular formula C26H33N7O4 and a molecular weight of 507.58 g/mol.
Structurally, Ribociclib Impurity 44 (C26H33N7O4) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 507.58 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C26H33N7O4 |
| Molecular Weight | 507.58 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
Related Ribociclib Standards
- Ribociclib Impurity 20 (CAS CATO-C4X-310020)
- Ribociclib Impurity 41 (CAS CATO-C4X-310041)
- Ribociclib impurity 1 (CAS CATO-C4X-31001)
- Ribociclib Impurity 21 (CAS CATO-C4X-310021)
- Ribociclib Impurity 16 (CAS CATO-C4X-310016)
- Ribociclib Impurity 19 (CAS CATO-C4X-310019)
- Ribociclib Impurity 23 (CAS CATO-C4X-310023)
- Ribociclib Impurity 10 (CAS CATO-C4X-310010)
Recommended Standards
- Abemaciclib Impurity 139 (CAS CATO-C4X-2937139)
- Nirmatrelvir-d9 (CAS CATO-CCAD303858)
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- JNK-IN-8 (CAS 1410880-22-6)
- Dopamine Impurity 105 (CAS CATO-C4X-1908105)
- Sacubitril impurity 19 (CAS CATO-C4X-280919)
- Dextromethorphan Impurity 3-methoxy-17-methyl-morphinan-10β-ol Formic acid (CAS 120442-81-1（free base）)
- 1-(3-Chloro-4-fluoropyridin-2-yl)ethanone (CAS 1393562-60-1)
- 3-Chloroimidazo[1,2-a]pyrazine (CAS 1429665-39-3)
- N'-(4-(trifluoromethoxy)phenyl)-2-(trifluoromethyl)benzohydrazide (CAS 338403-02-4)
- Venadaparib Impurity 96 (CAS 33048-50-9)
- [2-chloro-6-(1H-imidazol-1-yl)phenyl]methanamine hydrochloride (CAS 1820705-09-6)
- 3-Chloro-2,6-dimethylimidazo[1,2-b]pyridazine (CAS 1936397-13-5)
- Semaglutide impurity 104(Fmoc-D-His-Aib) (CAS 2171211-18-8)
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