(E)-({6-[(4-chlorophenyl)sulfanyl]pyridin-3-yl}methylidene)amino 4-methoxybenzoate CAS 338967-10-5
| CAS No. | 338967-10-5 |
| Molecular Formula | C20H15ClN2O3S |
| Molecular Weight | 398.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(E)-({6-[(4-chlorophenyl)sulfanyl]pyridin-3-yl}methylidene)amino 4-methoxybenzoate (CAS 338967-10-5) is a high-purity analytical reference standard with the molecular formula C20H15ClN2O3S and a molecular weight of 398.86 g/mol.
(E)-({6-[(4-chlorophenyl)sulfanyl]pyridin-3-yl}methylidene)amino 4-methoxybenzoate (C20H15ClN2O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
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 | C20H15ClN2O3S |
| Molecular Weight | 398.86 g/mol |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- N-[2-[3-(AMINOSULFONYL)-4-METHOXYPHENYL]ETHYL]-5-CHLORO-2-METHOXY-BENZAMIDE (CAS 158751-78-1)
- N-(3-Chloro-4-fluorophenyl)-4-hydroxy-1-methyl-2,2-dioxo-1,2-dihydro-2lambda~6~,1-benzothiazine-3-carbothioamide (CAS 477860-33-6)
- 3-(2-Chloro-6-fluorobenzyl)-4-hydroxy-1-(3-morpholinopropyl)pyridin-2(1H)-one (CAS 477860-52-9)
- (1-Oxoisoindolin-5-yl)boronic acid (CAS 1346526-56-4)
- ethyl (2R,5R)-5-phenylpyrrolidine-2-carboxylate (CAS 932040-65-8)
- 4-(3-Amino-3-methylbutyl)phenol (CAS 83987-81-9)
- N,1-dimethyl-5-nitro-1H-benzo[d]imidazol-2-amine (CAS 596130-84-6)
- 3-(Bis(4-methoxybenzyl)amino)-2,5-difluorobenzaldehyde (CAS 2812580-10-0)
- 4-(2-Hydroxyethyl)-2-nitrophenol (CAS 118172-64-8)
- 4-Bromo-3,5-difluoroaniline (CAS 203302-95-8)
- N-(thiazol-2-yl)dodecanamide (CAS 87689-31-4)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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