Benzenesulfonic Acid Impurity 4 Sodium Salt CAS 32073-22-6
| CAS No. | 32073-22-6 |
| Molecular Formula | C9H11O3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 222.23 g/mol gives Benzenesulfonic Acid Impurity 4 Sodium Salt distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Benzenesulfonic Acid Impurity 4 Sodium Salt (CAS 32073-22-6) is a high-purity analytical reference standard with the molecular formula C9H11O3SNa and a molecular weight of 222.23 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Benzenesulfonic Acid Impurity 4 Sodium Salt is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 222.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures Benzenesulfonic Acid Impurity 4 Sodium Salt 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 | C9H11O3S Na |
| Molecular Weight | 222.23 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Sulfur Atoms | 1 |
Related Benzenesulfonic Standards
- Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[4-(sulfophenyl)-2H-1,2,3-triazol-2-yl]-, sodium salt (1:x) (CAS 106906-28-9)
- Benzenesulfonic acid, 4,4',4'',4'''-[carbonylbis[imino-5,1,3-benzenetriylbis(carbonylimino)]]tetrakis-, tetrasodium salt (CAS 111150-22-2)
- Benzenesulfonic Acid Impurity 4 (CAS 116-50-7)
- Benzenesulfonic acid, 2,5-dihydroxy-, calcium salt, hydrate (2:1:?) (CAS 117552-78-0)
- Benzenesulfonic acid, 4-[(2-methyl-2-propen-1-yl)oxy]-, sodium salt (CAS 1208-67-9)
- Benzenesulfonic Impurity 3 (CAS 1352414-81-3)
- Benzenesulfonic Impurity 2 (CAS 1352414-88-0)
- Benzenesulfonic acid, (acetylamino)- (CAS 138721-63-8)
Recommended Standards
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- 4-(2-Fluorobenzoyl)quinoline (CAS 1706450-22-7)
- 3-(Pyrrolidin-1-yl)-N-[3-(trifluoromethyl)phenyl]butanamide (CAS 478077-96-2)
- N-(4-chlorophenyl)-2,2-difluoro-2-(4-methoxyphenoxy)acetamide (CAS 303150-79-0)
- Semaglutide impurity 286 (CAS CATO-C4X-2226286)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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