Pemafibrate Impurity 44 CAS CATO-C4X-290344
| CAS No. | CATO-C4X-290344 |
| Molecular Formula | C21H27NO5 |
| Molecular Weight | 373.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 373.44 g/mol gives Pemafibrate Impurity 44 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Pemafibrate Impurity 44 (CAS CATO-C4X-290344) is a certified pharmaceutical impurity reference standard with the molecular formula C21H27NO5 and a molecular weight of 373.44 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Pemafibrate Impurity 44 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 373.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C21H27NO5 |
| Molecular Weight | 373.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Pemafibrate Standards
- Pemafibrate Impurity 2 (CAS CATO-C4X-29032)
- Pemafibrate Impurity 21 (CAS CATO-C4X-290321)
- Pemafibrate Impurity 23 (CAS CATO-C4X-290323)
- Pemafibrate Impurity 63 (CAS CATO-C4X-290363)
- Pemafibrate Impurity 77 (CAS CATO-C4X-290377)
- Pemafibrate Impurity 50 (CAS CATO-C4X-290350)
- Pemafibrate Impurity 9 (CAS CATO-C4X-29039)
- Pemafibrate Impurity 32 (CAS CATO-C4X-290332)
Recommended Standards
- Mirogabalin Impurity 149 (CAS CATO-C4X-2924149)
- Papaverine impurity 21 (CAS CATO-C4X-206721)
- Spirotetramat (CAS 203313-25-1)
- Trimebutine EP Impurity E (CAS 84333-59-5)
- Cabergoline Impurity 2 (CAS 856676-33-0)
- Thioctic Acid Impurity 11 (CAS 1071-71-2)
- Aztreonam Impurity 121 (CAS CATO-C4X-1522121)
- Methyl 4-(4-amino-3-nitrophenyl)-2-((tert-butoxycarbonyl)amino)butanoate (CAS 1214161-73-5)
- (R)-Tetrahydrofuran-3-ol (CAS 84976-47-6)
- 2,6-Dimethyl-4-phenylpyrylium hexafluoroarsenate(1-) (CAS 84304-15-4)
- β-Casomorphin (1-3) (CAS 72122-59-9)
- N,N-Diphenyl-9H-carbazol-3-amine (CAS 883224-26-8)
- N-(4-iodophenyl)-3-methylbut-2-enamide (CAS 634162-24-6)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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