Desmopressin EP Impurity G CAS CATO-C4X-22157
| CAS No. | CATO-C4X-22157 |
| Molecular Formula | C48H68N14O12S2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Desmopressin EP Impurity G (CAS CATO-C4X-22157), a pharmacopoeial impurity reference standard (molecular formula C48H68N14O12S2C2HF3O2, MW 1211.30 g/mol) used for the identification and quantification of trace impurities in APIs.
Desmopressin EP Impurity G (C48H68N14O12S2C2HF3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C48H68N14O12S2 C2HF3O2 |
| Molecular Weight | 1211.30 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) | 22.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 14 |
| Sulfur Atoms | 2 |
Related Desmopressin Standards
- Desmopressin (CAS 16789-98-3)
- Desmopressin Impurity 45 (CAS 2251748-64-6)
- Desmopressin Acetate (CAS 62288-83-9)
- Desmopressin Acetate (COLD SHIPMENT REQUIRED) (1173202) (CAS 62357-86-2)
- Desmopressin EP Impurity A TFA salt (CAS CATO-C4X-22151)
- Desmopressin Impurity 10 (CAS CATO-C4X-221510)
- Desmopressin Impurity 11 (CAS CATO-C4X-221511)
- Desmopressin Impurity 12 (CAS CATO-C4X-221512)
Recommended Standards
- Tetrabenazine Impurity 13 (CAS CATO-C4X-274813)
- Relugolix Impurity 106 (CAS CATO-C4X-2429106)
- Lidocaine impurity 63 (CAS CATO-C4X-167963)
- Phenoxymethylpenicillin Impurity 25 (CAS CATO-C4X-212625)
- 9,9-Dimethyl-9H-fluoren-2-amine (CAS 108714-73-4)
- (2,3-Dihydroxyphenyl)(2-hydroxy-4,6-dimethoxyphenyl)methanone (CAS 219861-73-1)
- Itopride Impurity 4 (CAS CATO-C4X-13774)
- Methyl 2-(chlorocarbonyl)benzoate (CAS 4397-55-1)
- 1-(3,4-Difluorophenyl)-3-nitro-1-propanone (CAS 1345413-22-0)
- Tau Peptide (273-284) trifluoroacetate salt (CAS 1663490-91-2)
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