Semaglutide impurity 51 CAS CATO-C4X-222651
| CAS No. | CATO-C4X-222651 |
| Molecular Formula | C187H291N45O60 |
| Molecular Weight | 4129.60 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Semaglutide impurity 51 (C187H291N45O60) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Semaglutide impurity 51 (CAS CATO-C4X-222651) is a certified pharmaceutical impurity reference standard with the molecular formula C187H291N45O60 and a molecular weight of 4129.60 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C187H291N45O60 |
| Molecular Weight | 4129.60 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) | 65.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 45 |
Related Semaglutide Standards
- Semaglutide Impurity 158 (x TFA Salt) (CAS CATO-C4X-2226158)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
- Semaglutide（sodium salt） (CAS CATO-C4X-222619)
- Semaglutide Sodium Salt (CAS CATO-C4X-222620)
- Semaglutide (CAS 910463-68-2（free base）)
- Semaglutide-d5 (CAS CATO-C4X-2226153)
- Semaglutide impurity 54 (CAS CATO-C4X-222654)
- Glu17-Semaglutide (CAS CATO-C4X-2226209)
Recommended Standards
- Teriparatide-d10 (CAS 52232-67-4 (Unlabeled))
- Teriparatide-d10 TFA Salt (CAS CATO-C4X-21854)
- (Pyr3)-Amyloid β-Protein (3-40) trifluoroacetate salt (CAS 161818-04-8)
- His-Cyclic-Semaglutide (CAS CATO-C4X-2226182)
- Semaglutide (CAS CATO-C4X-2226105)
- Saxagliptin Impurity 3 (CAS 1564265-96-8)
- Edaravone impurity 38 (CAS CATO-C4X-106238)
- 5-(2,5-Dihydro-1H-pyrrol-3-yl)-1-methyl-1H-pyrazole dihydrochloride (CAS 2138382-26-8)
- Drostanolone Propionate (CAS 521-12-0)
- 1-(3-Chloro-5-fluorophenyl)-3-methylbutan-1-one (CAS 1352209-75-6)
- N-butyl-4-chloro-3-nitrobenzamide (CAS 59320-12-6)
- 2-(5-Chloro-2-thienyl)-3-methylpyridine (CAS 1187170-17-7)
- 1-(1-(4-Fluorobenzyl)-1H-pyrrol-2-yl)ethanone (CAS 251924-61-5)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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