Semaglutide impurity 81 CAS CATO-C4X-222681
| CAS No. | CATO-C4X-222681 |
| Molecular Formula | C33H62N2O6 |
| Molecular Weight | 582.86 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Semaglutide impurity 81 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.
Semaglutide impurity 81 (CAS CATO-C4X-222681) is a certified pharmaceutical impurity reference standard with the molecular formula C33H62N2O6 and a molecular weight of 582.86 g/mol.
Based on its molecular formula C33H62N2O6, Semaglutide impurity 81 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 582.86 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C33H62N2O6 |
| Molecular Weight | 582.86 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Semaglutide Standards
- Semaglutide Impurity 14(Discontinued,See CPTD788307 ) (CAS CATO-C4X-222614)
- Semaglutide impurity 227 (CAS CATO-C4X-2226227)
- Semaglutide Impurity 15 (CAS CATO-C4X-222615)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
- Semaglutide impurity 50 (CAS 2773558-66-8)
- Semaglutide Impurity 183 (CAS 159541-28-3)
- Semaglutide impurity 38 (CAS CATO-C4X-222638)
Recommended Standards
- 4418-73-9 PSZ3Q7662U Doradexanthin UNII-PSZ3Q7662U 3,3'-Dihydroxyechinenone 4-Keto-zeaxanthin All-trans-beta-doradexanthin beta-Doradexanthin beta,beta-Caroten-4-one, 3,3'-dihydroxy-, (3S,3'R)- Adonixanthin beta-Caroten-4-one, 3,3'-dihydroxy- (3S,3'R)-3,3'-Dihydroxy-beta,beta-caroten-4-one (3S,3'R)-4-Keto-zeaxanthin (3S,3'R)-Adonixanthin (CAS 4418-73-9)
- 2-((Decanoyloxy)methyl)-2-methylpropane-1,3-diyl bis(decanoate) (CAS 67874-05-9)
- Papilioerythrin (CAS 29125-77-7)
- Spheroidenone (CAS 13836-70-9)
- Bucladesine Impurity 1 (CAS 55443-13-5)
- Letermovir Impurity 100 (CAS CATO-C4X-2915100)
- Lenvatinib Impurity 129 (CAS 26271-75-0)
- 4-Amino-8-hydroxyquinoline-2-carboxylic acid (CAS 495409-09-1)
- 4-(2-(Difluoromethoxy)phenyl)-1H-pyrrole-3-carbonitrile (CAS 87388-20-3)
- 1-(Furan-3-yl)ethanamine (CAS 252372-09-1)
- 2-Bromo-6-(bromomethyl)-3-(difluoromethyl)-5-(trifluoromethyl)pyridine (CAS 1805252-66-7)
- 1-2-3-Tri-O-benzyl-4-6-O-benzylidene-α-D-galactopyranoside (CAS 53929-36-5)
- Sodium Phenylbutyrate (CAS 1716-12-7)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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