Silmitasertib (CX-4945) Sodium Salt CAS 1309357-15-0
| CAS No. | 1309357-15-0 |
| Molecular Formula | C19H11ClN3O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Silmitasertib (CX-4945) Sodium Salt 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.
Silmitasertib (CX-4945) Sodium Salt (CAS 1309357-15-0), molecular formula C19H11ClN3O2Na and molecular weight 371.76 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H11ClN3O2Na, Silmitasertib (CX-4945) Sodium Salt contains a salt form, a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 371.76 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C19H11ClN3O2 Na |
| Molecular Weight | 371.76 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 15.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
- 5-(Trifluoromethoxy)indoline-2,3-dione (CAS 169037-23-4)
- 1634AF 883528-38-9 C10H11ClN2 [(5-Chloro-1H-indol-2-yl)methyl]-methylamine (CAS 883528-38-9)
- Dihydrocurcumin (CAS 76474-56-1)
- 2,4-Dibromo-6-(difluoromethyl)-3-methoxypyridine (CAS 1806879-17-3)
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- (2S,4S)-Methyl 4-((tert-butyldimethylsilyl)oxy)-5-oxopyrrolidine-2-carboxylate (CAS 2098959-95-4)
- 2-Aminocyclohex-1-enecarboxylic acid (CAS 277305-66-5)
- 3-(5-(4-Chlorophenyl)furan-2-yl)-1-(2-methylpiperidin-1-yl)propan-1-one (CAS 853312-29-5)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
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