2,3-Dichlorobenzenesulfonic acid CAS 93648-06-7
| CAS No. | 93648-06-7 |
| Molecular Formula | C6H4Cl2O3S |
| Molecular Weight | 227.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,3-Dichlorobenzenesulfonic acid.
2,3-Dichlorobenzenesulfonic acid (CAS 93648-06-7), molecular formula C6H4Cl2O3S and molecular weight 227.07 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, 2,3-Dichlorobenzenesulfonic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 227.07 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C6H4Cl2O3S |
| Molecular Weight | 227.07 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorobenzenesulfonic Standards
Recommended Standards
- (4-((Phenylamino)methyl)phenyl)boronic acid (CAS 690957-44-9)
- 2,4-Dichloro-5-(methylsulfonyl)pyrimidine (CAS 514842-56-9)
- (3-((Tert-butoxycarbonyl)amino)bicyclo[1.1.1]Pentan-1-yl)boronic acid (CAS 2195389-87-6)
- (3-((Phenylamino)methyl)phenyl)boronic acid (CAS 690957-43-8)
- Pyrazolo[1,5-a]pyrazin-3-ol (CAS 2795137-16-3)
- 6-Chloroimidazo[2,1-b][1,3]thiazole-5-sulfonamide (CAS 112582-89-5)
- (E)-4-(2-(3-methylbenzoyl)hydrazinyl)-4-oxobut-2-enoic acid (CAS 362623-34-5)
- n-(3-Amino-2-methylphenyl)propane-1-sulfonamide (CAS 926189-88-0)
- Perfluoro(2,5,8-trimethyl-3,6,9-trioxadodecanoyl) fluoride (CAS 27639-98-1)
- Roxadustat Impurity N2 (CAS 57830-14-5)
- Amino-PEG10-alcohol (CAS 129449-09-8)
- 1-Nitro-2-dichloromethyl-4-(pentafluorosulfanyl)benzene (CAS 1309569-30-9)
- 3-Fluoro-N-(2-methoxyphenethyl)benzamide (CAS 866042-87-7)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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