5-(3-Oxo-3-phenyl-propenyl)-thiophene-2-sulfonyl chloride CAS 728864-91-3
| CAS No. | 728864-91-3 |
| Molecular Formula | C13H9ClO3S2 |
| Molecular Weight | 312.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(3-Oxo-3-phenyl-propenyl)-thiophene-2-sulfonyl chloride (CAS 728864-91-3), molecular formula C13H9ClO3S2 and molecular weight 312.79 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(3-Oxo-3-phenyl-propenyl)-thiophene-2-sulfonyl chloride (C13H9ClO3S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 312.79 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C13H9ClO3S2 |
| Molecular Weight | 312.79 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Recommended Standards
- 5-((3-Amino-5-chlorophenyl)amino)-1,6-dihydro-[1,1'-biphenyl]-3(2H)-one (CAS 959582-54-8)
- 5-Chloro-4-(methoxy(phenyl)methyl)-1-methyl-3-phenyl-1H-pyrazole (CAS 956181-56-9)
- 4-[(Benzyloxy)methyl]-5-chloro-1-methyl-3-phenyl-1H-pyrazole (CAS 318248-45-2)
- 6-(4-Chlorophenyl)-4-(4-ethylphenyl)-4,5-dihydropyridazin-3(2H)-one (CAS 344282-44-6)
- N-(3-(Methylthio)pyridin-4-yl)pivalamide (CAS 86847-72-5)
- 3-amino-1-(2-methylpiperidin-1-yl)propan-1-one (CAS 244789-26-2)
- 3-((4-Chlorophenyl)sulfonyl)-2-(cyclohexylsulfonyl)-4-methyl-6-phenylpyridine (CAS 339103-37-6)
- 3-Isopropylpicolinaldehyde (CAS 780800-74-0)
- Benzyl (3aR,7aR)-2-(bromomethyl)-3,3a,4,5,7,7a-hexahydro-2H-furo[2,3-c]pyridine-6-carboxylate (CAS 354154-95-3)
- 2-((Piperidin-4-ylmethyl)thio)-1h-benzo[d]imidazole (CAS 1211568-26-1)
- 2-(3-Hydroxy-6-isopropylquinolin-2-yl)cyclopent-4-ene-1,3-dione (CAS 876745-80-1)
- (S)-2-Amino-4-(perfluorophenyl)butanoic acid (CAS 794469-37-7)
- 5-Cyclopropoxy-3-iodo-2-methoxypyridine (CAS 1243481-66-4)
- Liraglutide(3-31)TFA Salt (CAS CATO-C4X-19921)
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