Linagliptin impurity 161 CAS CATO-C4X-1101161
| CAS No. | CATO-C4X-1101161 |
| Molecular Formula | C24H30N8O |
| Molecular Weight | 446.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Linagliptin impurity 161 (CAS CATO-C4X-1101161) is a certified pharmaceutical impurity reference standard with the molecular formula C24H30N8O and a molecular weight of 446.55 g/mol.
Linagliptin impurity 161 (C24H30N8O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Linagliptin impurity 161 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.
Physical & Chemical Properties
| Molecular Formula | C24H30N8O |
| Molecular Weight | 446.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
Related Linagliptin Standards
- Linagliptin impurity 164 (CAS CATO-C4X-1101164)
- Linagliptin impurity 117 (CAS CATO-C4X-1101117)
- Linagliptin impurity 162 (CAS CATO-C4X-1101162)
- Linagliptin Impurity 48 (CAS 853029-57-9)
- Linagliptin Impurity 72 (CAS CATO-C4X-110172)
- Linagliptin Impurity 80 (CAS 2446799-71-7)
- Linagliptin Impurity 41 (CAS 2074688-84-7)
- Linagliptin Impurity 135 (CAS CATO-C4X-1101135)
Recommended Standards
- Fluocortin Butyl Ester (CAS 41767-29-7)
- 8,8'-(Butane-1,4-diyl)bis(1,3-dimethyl-2-thioxo-2,3-dihydro-1H-purin-6(9H)-one) (CAS 6466-30-4)
- 2-Cyanophenothiazine Impurity 2 (CAS CATO-C4X-29072)
- 6-{2-[3-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-2-yl]pyrazolo[1,5-a]pyrimidin-7-yl}-2H,3H,5H-[1,3]thiazolo[3,2-a]pyrimidin-5-one (CAS 866143-94-4)
- Gentamicin Impurity 11 Pentaacetate Salt (CAS 25876-10-2(free base))
- Isavuconazole Impurity 41 (CAS CATO-C4X-123641)
- Benidipine Impurity 36 (CAS 864356-11-6)
- 2-(Dimethylaminomethyl)piperidine (CAS 60717-51-3)
- Carisoprodol (CAS 78-44-4)
- 4-Chloro-N-cyclohexylbenzenesulfonamide (CAS 7454-53-7)
- ((2S,4R)-4-Fluoropyrrolidin-2-yl)methanol (CAS 725684-84-4)
- 1-(2-chlorophenyl)-4-methyl-1H-pyrazol-3-amine (CAS 1249384-77-7)
- 4,4-Difluoroazepane Hydrochloride (CAS 1094073-72-9)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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