Pioglitazone Impurity 23 CAS CATO-C4X-138323
| CAS No. | CATO-C4X-138323 |
| Molecular Formula | C15H15NO2 |
| Molecular Weight | 241.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Pioglitazone Impurity 23.
As a process- or degradation-related impurity, Pioglitazone Impurity 23 (CAS CATO-C4X-138323, C15H15NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Pioglitazone Impurity 23 (C15H15NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 241.29 g/mol, it falls into the medium-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.
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 | C15H15NO2 |
| Molecular Weight | 241.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Pioglitazone Standards
- Pioglitazone Amino Impurity (CAS 85583-40-0)
- Pioglitazone Impurity 19 (CAS 144809-26-7)
- Pioglitazone Aldehyde Impurity (CAS 114393-97-4)
- Pioglitazone impurity 49 (CAS CATO-C4X-138349)
- Pioglitazone Impurity 15 (CAS 291536-42-0)
- Pioglitazone Impurity 8 (CAS 74772-78-4)
- Pioglitazone impurity 56 (CAS 1258625-43-2)
- Pioglitazone Hydroxy Aldehyde Impurity (CAS 471295-98-4)
Recommended Standards
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- Ofloxacin Impurity 13 (CAS CATO-C4X-171713)
- Vonoprazan Impurity 55 (CAS 2514957-29-8)
- tert-Butyl Methyl(4-nitrophenyl)carbamate (CAS 474020-88-7)
- Procaterol Impurity N7 (CAS 15450-72-3)
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- (2,6-Difluoropyridin-3-yl)methanamine (CAS 1511582-33-4)
- [3,5 Diiodo-Tyr7] Peptide T (CAS 128551-40-6)
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