(S)-3,5-Dichloro-4-[2-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-2-[[3-(cyclopropylmethoxy)-4-(methylsulfonamido)benzoyl]oxy]ethyl]pyridine 1-Oxide CAS 1239278-59-1
| CAS No. | 1239278-59-1 |
| Molecular Formula | C30H30Cl2F2N2O8S |
| Molecular Weight | 687.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-3,5-Dichloro-4-[2-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-2-[[3-(cyclopropylmethoxy)-4-(methylsulfonamido)benzoyl]oxy]ethyl]pyridine 1-Oxide (C30H30Cl2F2N2O8S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine 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).
(S)-3,5-Dichloro-4-[2-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-2-[[3-(cyclopropylmethoxy)-4-(methylsulfonamido)benzoyl]oxy]ethyl]pyridine 1-Oxide (CAS 1239278-59-1), molecular formula C30H30Cl2F2N2O8S and molecular weight 687.54 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C30H30Cl2F2N2O8S |
| Molecular Weight | 687.54 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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