4-[(E)-[(Thiophen-2-yl)methylidene]amino]phenyl 4-chlorobenzene-1-sulfonate CAS 328287-38-3
| CAS No. | 328287-38-3 |
| Molecular Formula | C17H12ClNO3S2 |
| Molecular Weight | 377.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-[(E)-[(Thiophen-2-yl)methylidene]amino]phenyl 4-chlorobenzene-1-sulfonate (C17H12ClNO3S2) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
4-[(E)-[(Thiophen-2-yl)methylidene]amino]phenyl 4-chlorobenzene-1-sulfonate (CAS 328287-38-3) is a high-purity analytical reference standard with the molecular formula C17H12ClNO3S2 and a molecular weight of 377.87 g/mol.
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 | C17H12ClNO3S2 |
| Molecular Weight | 377.87 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related E Standards
- N-((4-(Thiophen-2-yl)tetrahydro-2H-pyran-4-yl)methyl)-[1,1'-biphenyl]-4-carboxamide (CAS 1203361-25-4)
- 4-(3-(Thiophen-2-yl)-1,2,4-oxadiazol-5-yl)-1-(2-(trifluoromethyl)phenyl)-1H-1,2,3-triazol-5-amine (CAS 892748-87-7)
- 5-(Thiophen-2-ylsulfonyl)-8-(trifluoromethyl)-1,3,4,5-tetrahydro-2H-benzo[b][1,4]diazepin-2-one (CAS 866138-35-4)
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- 4-[4-(Thiophen-2-yl)pyrimidin-2-yl]phenyl N-cyclohexylcarbamate (CAS 477862-61-6)
- 1-(3,5-Di(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-3-morpholinopropan-1-one (CAS 871307-99-2)
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Recommended Standards
- 2-Chloro-N,N-diethyl-6,7-diphenylimidazo[1,2-b][1,2,4]triazin-3-amine (CAS 90170-13-1)
- Tert-butyl 3-(((3-chloroquinoxalin-2-yl)oxy)methyl)piperidine-1-carboxylate (CAS 939986-43-3)
- 2-(6-Chloropyridin-3-yl)-1-(4-methoxybenzyl)-5,6-dimethyl-1H-benzo[d]imidazole (CAS 337920-60-2)
- Losartan Impurity 28 (CAS 124750-67-0)
- 2-Amino-N-(3-hydroxypropyl)thiazole-5-carboxamide (CAS 1538218-73-3)
- 3-Cyclopropoxy-5-(trifluoromethyl)pyridin-2-amine (CAS 1243321-88-1)
- (S)-2-(3-Isopropylpiperazin-1-yl)acetic acid (CAS 1240586-47-3)
- 6,7,8,9-Tetrahydro-5H-benzo[7]annulen-7-amine hydrochloride (CAS 103858-36-2)
- 3-Phenylpropyl hexanoate (CAS 6281-40-9)
- (S)-3-((tert-butoxycarbonyl)amino)-3-(2,3-dimethoxyphenyl)propanoic acid (CAS 499995-83-4)
- 5-(3,4-Dimethoxyphenyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (CAS 333761-27-6)
- n-(2-Fluorophenyl)pivalamide (CAS 88288-07-7)
- 8-Bromo-4-chloro-7-fluoroquinoline-3-carbonitrile (CAS 1017788-60-1)
- Galanin-Like Peptide (porcine) trifluoroacetate salt (CAS 245114-96-9)
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