Pitavastatin Impurity 44 CAS CATO-C4X-103744
| CAS No. | CATO-C4X-103744 |
| Molecular Formula | C25H23FNO5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Pitavastatin Impurity 44 (CAS CATO-C4X-103744), a pharmacopoeial impurity reference standard (molecular formula C25H23FNO5Ca, MW 476.54 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Pitavastatin Impurity 44 (C25H23FNO5Ca) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.5, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 476.54 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).
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 | C25H23FNO5 Ca |
| Molecular Weight | 476.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Pitavastatin Standards
- Pitavastatin Impurity 92 (CAS 1159588-21-2)
- Pitavastatin Impurity 112 (CAS 1187966-91-1)
- Pitavastatin Impurity 90 (CAS 1187966-91-1（free base）)
- Pitavastatin Impurity 51 (CAS 1187966-93-3)
- Pitavastatin Impurity 55 (CAS 1187966-94-4)
- Pitavastatin Impurity 54 (CAS 1187966-95-5)
- Pitavastatin Impurity 40 (CAS 121659-86-7)
- Pitavastatin Impurity 96 (CAS 121660-11-5)
Recommended Standards
- Cefmetazole Impurity 66 Sodium Salt (CAS 2714506-85-9 (free base))
- Topiroxostat Impurity 8 (CAS 36770-53-3)
- Penehyclidine impurity 12 (CAS 151673-91-5)
- tert-butyl N-[5-(propan-2-yl)-1,3-thiazol-4-yl]carbamate (CAS 1803608-32-3)
- (S)-6-(Pyrrolidin-3-yloxy)pyrazin-2-amine hydrochloride (CAS 1417789-55-9)
- (1,1-Dioxidotetrahydrothiophen-3-yl)glycine hydrochloride (CAS 1093123-73-9)
- 1-(3-(4-Aminophenyl)propanoyl)azetidin-2-one (CAS 1024869-25-7)
- 9-Octadecenoic acid, 12-hydroxy-, 3-hydroxy-2,2-bis(hydroxymethyl)propyl ester, (9Z,12R)-, polymer with 1,3-diisocyanatomethylbenzene (CAS 52390-75-7)
- 2-(3-Methylpiperidin-1-yl)aniline (CAS 252758-93-3)
- Semaglutide impurity 92 (CAS CATO-C4X-222692)
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