Calcitonin EP Impurity A CAS CATO-C4X-22181
| CAS No. | CATO-C4X-22181 |
| Molecular Formula | C147H242N44O49S2 |
| Molecular Weight | 3473.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C147H242N44O49S2, Calcitonin EP Impurity A contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 3473.89 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Calcitonin EP Impurity A (CAS CATO-C4X-22181) is a certified pharmaceutical impurity reference standard with the molecular formula C147H242N44O49S2 and a molecular weight of 3473.89 g/mol.
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.
CATO manufactures Calcitonin EP Impurity A under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C147H242N44O49S2 |
| Molecular Weight | 3473.89 g/mol |
| Purity | ≥95% |
| 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) | 49.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 44 |
| Sulfur Atoms | 2 |
Related Calcitonin Standards
- Calcitonin EP Impurity D (CAS CATO-C4X-221810)
- Calcitonin Impurity 26 (CAS CATO-C4X-221826)
- Calcitonin EP Impurity E (CAS CATO-C4X-22185)
- Calcitonin Impurity 24 (CAS CATO-C4X-221824)
- Calcitonin Impurity 21 X TFA Salt (CAS CATO-C4X-221821)
- Calcitonin Impurity 11 (CAS 187476-38-6)
- Calcitonin Impurity 12 (CAS CATO-C4X-221812)
- Calcitonin Impurity 13 (CAS CATO-C4X-221813)
Recommended Standards
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- VIP Antagonist (CAS 125093-93-8)
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- Acetyl-(D-Phe2)-GRF amide (human) (H-5565.1000) (CAS 93965-89-0)
- Saxagliptin Impurity 93 (CAS 1642872-42-1)
- Sivelestat Impurity 6 (CAS CATO-C4X-21236)
- Lenvatinib Impurity 1 (CAS 417714-14-8)
- Dimethyl (2S,4R)-piperidine-2,4-dicarboxylate (CAS 98935-65-0)
- 2-(((3,4-Difluorophenyl)amino)methyl)phenol (CAS 329779-39-7)
- 1-(2,4-Dimethoxybenzoyl)-4-{[3-(4-fluorophenyl)-1,2,4-oxadiazol-5-yl]methyl}piperidine (CAS 1775455-42-9)
- 6-Bromo-N-ethylpyridin-2-amine (CAS 724770-74-5)
- alpha,4-Bis(trifluoromethyl)benzyl Alcohol (CAS 150698-81-0)
- Ezetimibe Impurity 135 (CAS CATO-C4X-1098135)
- Des-Ile27-Tirzepatide (CAS CATO-CPTD788946)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com