3,4-Dichlorobenzenesulfonic Acid CAS 939-95-7
| CAS No. | 939-95-7 |
| Molecular Formula | C6H4Cl2O3S |
| Molecular Weight | 227.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3,4-Dichlorobenzenesulfonic Acid (C6H4Cl2O3S) 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 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 227.07 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 3,4-Dichlorobenzenesulfonic Acid (CAS 939-95-7), a certified reference material (molecular formula C6H4Cl2O3S, MW 227.07 g/mol) for analytical method development and quality control.
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.
CATO manufactures 3,4-Dichlorobenzenesulfonic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
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.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorobenzenesulfonic Standards
Recommended Standards
- 2-Bromo-7-fluorotricyclo[6.2.0.03,6]deca-1,3(6),7-triene (CAS 2676868-20-3)
- 2,6-Dichlorobenzene Sulphonic acid (CAS 6697-96-7)
- 3-Bromo-5-(difluoromethyl)-2-methylthiophene (CAS 2091602-53-6)
- 3-Chloro-4-hydroxybenzenesulfonyl chloride (CAS 25319-94-2)
- {2-[2-(3-Methylbutoxy)phenyl]ethyl}amine hydrochloride (CAS 1201633-45-5)
- Ethyl 2-(2-(2,5-dimethyl-1H-pyrrol-1-yl)-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl)-3-phenylpropanoate (CAS 477869-92-4)
- 7-Amino-6-methoxy-2,3-dihydro-1H-inden-1-one (CAS 1154740-87-0)
- 9-(3-(Cis-3,5-dimethylpiperazin-1-yl)propyl)-9H-carbazole hydrochloride (CAS 75859-05-1)
- Ethyl 2-(benzyloxy)benzoate (CAS 63888-93-7)
- 3-(benzylsulfanyl)-1-(2-fluorophenyl)-5,6,7,8-tetrahydro-4-isoquinolinecarbonitrile (CAS 861209-36-1)
- 3-(2-Ethylphenyl)-5-(3-methoxyphenyl)-1H-1,2,4-triazole (CAS 71368-30-4)
- Butyl 3-(3,4-dihydroxyphenyl)acrylate (CAS 22020-28-6)
- 2,3-Dichloropyridine-4-boronic Acid (CAS 951677-39-7)
- Semaglutide impurity 103 (CAS 1446013-07-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com