Tolvaptan Impurity 4 CAS 1133419-00-7
| CAS No. | 1133419-00-7 |
| Molecular Formula | C20H20ClNO5S |
| Molecular Weight | 421.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H20ClNO5S, Tolvaptan Impurity 4 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 421.89 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.
Tolvaptan Impurity 4 (CAS 1133419-00-7) is a certified pharmaceutical impurity reference standard with the molecular formula C20H20ClNO5S and a molecular weight of 421.89 g/mol.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Tolvaptan Impurity 4 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.
Physical & Chemical Properties
| Molecular Formula | C20H20ClNO5S |
| Molecular Weight | 421.89 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Tolvaptan Standards
- Tolvaptan Impurity 80 (CAS CATO-C4X-195580)
- Tolvaptan Impurity 9 (CAS 1432725-23-9)
- Tolvaptan Impurity 40 (CAS 176970-21-1)
- Tolvaptan Impurity 124 (CAS CATO-C4X-1955124)
- Tolvaptan Impurity 89 (CAS 137977-65-2)
- Tolvaptan Impurity 41 (CAS 1580889-32-2)
- Tolvaptan Impurity 99 (CAS 137977-35-6)
- Tolvaptan Impurity 118 (CAS CATO-C4X-1955118)
Recommended Standards
- Mosapride Impurity 36 (CAS 112886-56-3)
- 1-(4-chloro-2-nitrobenzenesulfonyl)-4-[(2E)-3-phenylprop-2-en-1-yl]piperazine 1025588-81-1 MS-10439 (CAS 1025588-81-1)
- Mosapride (CAS 112885-41-3)
- (E)-1-((4-chlorophenyl)sulfonyl)-N'-(2-hydroxybenzylidene)piperidine-4-carbohydrazide (CAS 393852-31-8)
- Neostigmine impurity 32 (CAS 23040-64-4)
- Rosuvastatin impurity 245 (CAS 147118-41-0)
- Drospirenone EP Impurity B (CAS CATO-C4X-16242)
- 3-hydrazinyl-4-methyl-4H-1,2,4-triazole hydroiodide (CAS 1989671-43-3)
- 3-(tert-Butoxy)-5-cyclopropoxybenzonitrile (CAS 1243405-59-5)
- 3-Methyl-1-octadecyl-1H-imidazol-3-ium chloride (CAS 171058-19-8)
- Tert-butyl 3-(aminomethyl)tetrahydrofuran-3-carboxylate (CAS 2137778-54-0)
- (2-Hydroxy-3,4-dimethylphenyl)boronic acid (CAS 259209-31-9)
- 2-{[3-(naphthalen-2-yl)-1-phenyl-1H-pyrazol-4-yl]methyl}-2,3-dihydro-1H-isoindole-1,3-dione (CAS 955963-18-5)
- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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