Liraglutide Impurity 21 TFA Salt CAS CATO-C4X-199221
| CAS No. | CATO-C4X-199221 |
| Molecular Formula | C91H143N17O23 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Liraglutide Impurity 21 TFA Salt (C91H143N17O23C2HF3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Liraglutide Impurity 21 TFA Salt (CAS CATO-C4X-199221), a pharmacopoeial impurity reference standard (molecular formula C91H143N17O23C2HF3O2, MW 1957.26 g/mol) used for the identification and quantification of trace impurities in APIs.
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), Liraglutide Impurity 21 TFA Salt 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 | C91H143N17O23 C2HF3O2 |
| Molecular Weight | 1957.26 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 29.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 17 |
Related Liraglutide Standards
- Liraglutide (CAS 204656-20-2)
- Liraglutide-d8 Tetratrifluoroacetate (CAS 204656-20-2 (non-labelled, free base))
- Liraglutide Sodium Salt (CAS 204656-20-2（free base）)
- Liraglutide Impurity 22 (CAS 536721-25-2)
- Liraglutide(3-31)TFA Salt (CAS CATO-C4X-19921)
- Liraglutide Impurity 10 TFA Salt (CAS CATO-C4X-199210)
- Liraglutide(10-22)TFA Salt (CAS CATO-C4X-199211)
- Liraglutide(14-22)TFA Salt (CAS CATO-C4X-199212)
Recommended Standards
- Atorvastatin Calcium EP Impurity J (CAS 1105067-93-3)
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- 1-(2-(Methylthio)pyrimidin-5-yl)ethanone (CAS 84755-29-3)
- Imidazo[1,2-a]pyridin-5-yldimethylphosphine oxide (CAS 2528109-31-9)
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- 2-(4-Methoxy-3-methylphenyl)pentan-2-ol (CAS 1443305-05-2)
- 1-(1H-Benzo[d]imidazol-2-yl)-3-methyl-1H-pyrazol-5-amine (CAS 375394-74-4)
- Brain Injury Derived Neurotrophic Peptide (H-3914.0001) (CAS 148330-12-5)
Why CATO?
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