Calcitonin Impurity 21 X TFA Salt CAS CATO-C4X-221821
| CAS No. | CATO-C4X-221821 |
| Molecular Formula | C145H238N42O50S2 |
| Molecular Weight | 3433.82 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Calcitonin Impurity 21 X 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.
Calcitonin Impurity 21 X TFA Salt (CAS CATO-C4X-221821) is a certified pharmaceutical impurity reference standard with the molecular formula C145H238N42O50S2 and a molecular weight of 3433.82 g/mol.
The molecular framework of Calcitonin Impurity 21 X TFA Salt (C145H238N42O50S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C145H238N42O50S2 |
| Molecular Weight | 3433.82 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 |
| Degree of Unsaturation (DBE) | 48.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 42 |
| Sulfur Atoms | 2 |
Related Calcitonin Standards
- Calcitonin Impurity 11 (CAS 187476-38-6)
- Calcitonin Impurity 12 (CAS CATO-C4X-221812)
- Calcitonin Impurity 13 (CAS CATO-C4X-221813)
- Calcitonin EP Impurity B (CAS CATO-C4X-22182)
- Calcitonin Salmon (CAS 47931-85-1)
- Calcitonin Impurity 24 (CAS CATO-C4X-221824)
- Calcitonin (eel) (H-2255.0001) (CAS 57014-02-5)
- [26-Pro]Calcitonin (CAS CATO-C4X-221823)
Recommended Standards
- [9-DLeu]Calcitonin (CAS CATO-C4X-221825)
- b-Endorphin (bovine, camel, mouse) (H-2705.0001) (CAS 59887-17-1)
- Cortistatin-29 (human) trifluoroacetate salt (CAS 1815618-16-6)
- Defensin HNP-1 (human) (CAS 148093-65-6)
- Lasmiditan Impurity 26 (CAS CATO-C4X-247826)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
- Racecadotril EP Impurity G (CAS 81110-69-2)
- 2-Amino-5-(piperidin-1-yl)benzamide (CAS 314768-97-3)
- Methyl 5-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-3-carboxylate (CAS 866216-24-2)
- 2-Bromo-N-(1-(furan-2-yl)ethyl)benzamide (CAS 923761-82-4)
- 1-Cbz-2-(2-hydroxy-ethyl)-piperidine (CAS 39945-50-1)
- O-tolyl benzoate (CAS 617-02-7)
- (R)-1-(2-(Trifluoromethyl)pyrimidin-5-yl)ethan-1-amine hydrochloride (CAS 1225462-40-7)
- Semaglutide Impurity 128 (CAS 2490269-78-6)
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