7-Ethoxynaphthalene-2-sulfonyl chloride CAS 186550-33-4
| CAS No. | 186550-33-4 |
| Molecular Formula | C12H11ClO3S |
| Molecular Weight | 270.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Ethoxynaphthalene-2-sulfonyl chloride (CAS 186550-33-4), molecular formula C12H11ClO3S and molecular weight 270.73 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-Ethoxynaphthalene-2-sulfonyl chloride (C12H11ClO3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C12H11ClO3S |
| Molecular Weight | 270.73 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethoxynaphthalene Standards
- 6-Ethoxynaphthalene-2-sulfonyl chloride (CAS 1246776-76-0)
- 4-Ethoxynaphthalene-1-sulfonyl chloride (CAS 91222-55-8)
- 4-ethoxynaphthalene-1-sulfonamide (CAS 861092-30-0)
- 2-Ethoxynaphthalene-1-carboxylic Acid (CAS 2224-00-2)
- 3-Ethoxynaphthalene-2-carboxylic acid (CAS 54245-36-2)
- 6-Ethoxynaphthalene-2-boronic Acid (CAS 352525-98-5)
- 2-Ethoxynaphthalene-1-carboxamide (CAS 872271-18-6)
- 2-Ethoxynaphthalene-1-thiol (CAS 100518-56-7)
Recommended Standards
- (2-Chlorobenzyl)(3,5-difluorophenyl)sulfane (CAS 1443353-29-4)
- tert-Butyl (1-(chlorosulfonyl)azetidin-3-yl)carbamate (CAS 1934496-78-2)
- (4-Chlorobenzyl)(3,4-difluorophenyl)sulfane (CAS 1443353-23-8)
- tert-butyl 3-[(chlorosulfonyl)methyl]oxetane-3-carboxylate (CAS 1955519-85-3)
- 5-Benzoyl-N,N-dimethyl-3-(pyridin-3-yl)thiophen-2-amine (CAS 1383543-20-1)
- 3-Chloro-6-(2,5-dimethoxyphenyl)pyridazine (CAS 1105194-50-0)
- 4-Bromo-2-((3-fluorobenzyl)oxy)pyridine (CAS 2090456-46-3)
- 1-(2,2-Difluoroethoxy)-2-iodobenzene (CAS 1160495-81-7)
- 4,4-Dimethyl-1,2,3,4-tetrahydroquinoline (CAS 20364-31-2)
- 3-Methyl-N-(pyridin-4-ylmethyl)but-2-enamide (CAS 1280810-85-6)
- 1-Fluorodecane (CAS 334-56-5)
- 4,4'-(Tetrahydro-1H,3H-furo[3,4-c]furan-1,4-diyl)bis(2-methoxyphenol) (CAS 7452-03-1)
- 2-(2,4-dimethylphenyl)morpholine (CAS 1094508-93-6)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
Why CATO?
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