S-(2-(4-Chlorophenyl)-2-oxoethyl) O-ethyl carbonodithioate, 97% CAS 91193-23-6
| CAS No. | 91193-23-6 |
| Molecular Formula | C11H11ClO2S2 |
| Molecular Weight | 274.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
S-(2-(4-Chlorophenyl)-2-oxoethyl) O-ethyl carbonodithioate, 97% (CAS 91193-23-6), molecular formula C11H11ClO2S2 and molecular weight 274.79 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, S-(2-(4-Chlorophenyl)-2-oxoethyl) O-ethyl carbonodithioate, 97% is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 274.79 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C11H11ClO2S2 |
| Molecular Weight | 274.79 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
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- 2-Pyrrolidin-2-yl-1,3-benzoxazole (CAS 885461-58-5)
- Glutamic acid Impurity 4 (CAS 57444-70-9)
- 2-(3,3-Dimethoxycyclohexyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2377587-37-4)
- Ethyl 2-(4-bromothiophen-3-yl)-2-oxoacetate (CAS 704200-66-8)
- Methyl 1-[2-(methylamino)ethyl]piperidine-4-carboxylate dihydrochloride (CAS 1787942-11-3)
- n-(2-Amino-2-oxoethyl)-5-bromo-N-cyclopentylthiophene-2-carboxamide (CAS 1281100-34-2)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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