4-Chloroaniline-3-Sulfonic Acid CAS 88-43-7
| CAS No. | 88-43-7 |
| Molecular Formula | C6H6ClNO3S |
| Molecular Weight | 207.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Chloroaniline-3-Sulfonic 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.
4-Chloroaniline-3-Sulfonic Acid (CAS 88-43-7) is a high-purity analytical reference standard with the molecular formula C6H6ClNO3S and a molecular weight of 207.63 g/mol.
Based on its molecular formula C6H6ClNO3S, 4-Chloroaniline-3-Sulfonic Acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 207.63 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C6H6ClNO3S |
| Molecular Weight | 207.63 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, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloroaniline Standards
- 2-Benzyl-4-chloroaniline (CAS 40545-76-4)
- 24176-54-3 4-Chloroaniline-15N DTXSID30479982 (CAS 24176-54-3)
- 4-Chloroaniline-<SUP>13</SUP>C<SUB>6</SUB> (CAS 1313734-69-8)
- 4-Chloroaniline-2,3,5,6-d4 (CAS 191656-33-4)
- 2-Chloroaniline-4,6-d2 (CAS 347840-10-2)
- 4-Chloroaniline-2,6-d2 (CAS 35749-94-1)
- 2-Chloroaniline- (CAS 36238-55-8)
- 3-Chloroaniline (CAS 108-42-9)
Recommended Standards
- Diazoxide Impurity 18 (CAS CATO-C4X-195218)
- 6-Amino-5-chloropyridine-3-sulfonamide (CAS 1269152-45-5)
- Diazoxide Impurity 16 (CAS 576997)
- 4-Amino-5-chloropyridine-3-sulfonamide (CAS 1352496-64-0)
- 6-Bromobenzo[d]thiazole-2-carbonitrile (CAS 741253-03-2)
- 2-(Aminomethyl)-6-chloro-4-(difluoromethyl)-3-iodopyridine (CAS 1805173-01-6)
- 4'-Cyano-3-fluoro-3'-hydroxy-[1,1'-biphenyl]-4-carboxylic acid (CAS 1261964-35-5)
- Methyl Imidazo[1,5-a]pyridine-7-carboxylate (CAS 1377829-50-9)
- 3-Benzyl-1,3,7-triazaspiro[4.4]nonane-2,4-dione (CAS 1500513-55-2)
- 2,6-Dimethyl-4-phenylpyridine (CAS 3044-71-1)
- 4-(Bromomethyl)-2-nitrophenol (CAS 177179-94-1)
- Ingavirin (CAS 219694-63-0)
- 4-oxo-3,4-dihydro-2H-1-benzopyran-6-sulfonamide (CAS 955903-90-9)
- Mast Cell Degranulating (MCD) Peptide HR-2 (CAS 80388-04-1)
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