(E)-4-(tert-butylthio)-3-nitrobenzaldehyde O-(2,4-dichlorobenzyl) oxime CAS 303996-34-1
| CAS No. | 303996-34-1 |
| Molecular Formula | C18H18Cl2N2O3S |
| Molecular Weight | 413.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 413.32 g/mol gives (E)-4-(tert-butylthio)-3-nitrobenzaldehyde O-(2,4-dichlorobenzyl) oxime distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(E)-4-(tert-butylthio)-3-nitrobenzaldehyde O-(2,4-dichlorobenzyl) oxime (CAS 303996-34-1), molecular formula C18H18Cl2N2O3S and molecular weight 413.32 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H18Cl2N2O3S, (E)-4-(tert-butylthio)-3-nitrobenzaldehyde O-(2,4-dichlorobenzyl) oxime contains a steroid 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 413.32 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (E)-4-(tert-butylthio)-3-nitrobenzaldehyde O-(2,4-dichlorobenzyl) oxime meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H18Cl2N2O3S |
| Molecular Weight | 413.32 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- (E)-{[4-(tert-butylsulfanyl)-3-nitrophenyl]methylidene}[(2,6-dichlorophenyl)methoxy]amine (CAS 303996-35-2)
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