5-(Chlorosulfonyl)-1-naphthoic acid CAS 294840-12-3
| CAS No. | 294840-12-3 |
| Molecular Formula | C11H7ClO4S |
| Molecular Weight | 270.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(Chlorosulfonyl)-1-naphthoic acid (CAS 294840-12-3) is a high-purity analytical reference standard with the molecular formula C11H7ClO4S and a molecular weight of 270.69 g/mol.
5-(Chlorosulfonyl)-1-naphthoic acid (C11H7ClO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, 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 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.
Physical & Chemical Properties
| Molecular Formula | C11H7ClO4S |
| Molecular Weight | 270.69 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 methanol, ethanol, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorosulfonyl Standards
- 3-(Chlorosulfonyl)naphthalene-1-carboxylic acid (CAS 1258652-21-9)
- Methyl 5-(chlorosulfonyl)-4-methoxythiophene-2-carboxylate (CAS 1384429-11-1)
- Methyl 5-(chlorosulfonyl)-4-methoxythiophene-3-carboxylate (CAS 175203-45-9)
- Methyl 5-(chlorosulfonyl)-2,4-difluorobenzoate (CAS 1099632-51-5)
- Methyl 3-(chlorosulfonyl)-2,5-difluorobenzoate (CAS 1154149-20-8)
- Methyl 3-(chlorosulfonyl)-2,6-difluorobenzoate (CAS 1154155-42-6)
- methyl 5-(chlorosulfonyl)-2,3-difluorobenzoate (CAS 1247485-41-1)
- Ethyl 2-(chlorosulfonyl)-4-methylthiazole-5-carboxylate (CAS 89694-92-8)
Recommended Standards
- 4-(2-Pyrazinyloxy)benzenesulfonyl Chloride (CAS 264624-18-2)
- 5-Chloro-6-fluoro-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-4-ol (CAS 2368909-53-7)
- 2-Chloro-5-[(4-nitrophenoxy)methyl]-1,3-thiazole (CAS 339018-26-7)
- 6-Chloro-10,13-dioxa-4-thiatricyclo[7.4.0.0,3,7]trideca-1(9),2,5,7-tetraene-5-carboxylic acid (CAS 854357-34-9)
- 2-Fluoro-5-methyl-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)benzenesulfonamide (CAS 1637249-16-1)
- 2-(4-(Trifluoromethyl)phenyl)pyrazine (CAS 380626-88-0)
- 4-Methyl-1-(pyridin-4-ylmethyl)-1h-pyrazol-3-amine (CAS 1339751-23-3)
- Roxadustat Impurity 24 (CAS CATO-C4X-221324)
- Felbamate USP Related Compound A (CAS 25451-53-0)
- 5-(3-Chlorophenoxymethyl)furan-2-carbaldehyde (CAS 438220-92-9)
- 3-{1-[2-(4-chloro-2-methylphenoxy)acetyl]piperidin-4-yl}-4-phenyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775338-44-7)
- 12-(Phenyl(pyridin-2-yl)amino)dodecanoic acid (CAS 1393447-82-9)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
- D-[Thr]5-Semaglutide (CAS CATO-C4X-2226245)
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