5-(Chlorosulfonyl)-2-methoxy-4-methylbenzoic acid CAS 85591-40-8
| CAS No. | 85591-40-8 |
| Molecular Formula | C9H9ClO5S |
| Molecular Weight | 264.68 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 5-(Chlorosulfonyl)-2-methoxy-4-methylbenzoic acid.
5-(Chlorosulfonyl)-2-methoxy-4-methylbenzoic acid (CAS 85591-40-8) is a high-purity analytical reference standard with the molecular formula C9H9ClO5S and a molecular weight of 264.68 g/mol.
The molecular framework of 5-(Chlorosulfonyl)-2-methoxy-4-methylbenzoic acid (C9H9ClO5S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
CATO manufactures 5-(Chlorosulfonyl)-2-methoxy-4-methylbenzoic 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 | C9H9ClO5S |
| Molecular Weight | 264.68 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 |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorosulfonyl Standards
- methyl 2-(chlorosulfonyl)-4-methoxybenzoate (CAS 108318-75-8)
- methyl 4-(chlorosulfonyl)-2-methoxybenzoate (CAS 1581266-78-5)
- Methyl 4-(chlorosulfonyl)-3-methoxybenzoate (CAS 162141-56-2)
- Methyl 3-(chlorosulfonyl)-4-methoxybenzoate (CAS 192323-12-9)
- 2-[4-(chlorosulfonyl)-2-methylphenoxy]acetic acid (CAS 23095-23-0)
- 2-[5-(chlorosulfonyl)-2-methoxyphenyl]acetic acid (CAS 926244-40-8)
- 3-[4-(chlorosulfonyl)phenoxy]propanoic acid (CAS 926251-94-7)
- Methyl 2-(chlorosulfonyl)-3-methoxybenzoate (CAS 215648-56-9)
Recommended Standards
- 4-Chloro-N-(5-fluoro-2-methylphenyl)picolinamide (CAS 941128-44-5)
- 5-Chloro-2-((2-fluorobenzyl)oxy)benzaldehyde (CAS 590360-21-7)
- 4-Chloro-N-(4-fluorobenzyl)picolinamide (CAS 851441-84-4)
- 5-Chloro-2-((3-fluorobenzyl)oxy)benzaldehyde (CAS 667437-25-4)
- 1-(Difluoromethyl)-3-methoxynaphthalene (CAS 1261621-00-4)
- (S)-2-Amino-N-cyclopropyl-N-(3-nitrobenzyl)propanamide (CAS 1354006-83-9)
- 6-Ethynylfuro[3,2-b]pyridine (CAS 1203499-35-7)
- Memantine Impurity 65 (CAS CATO-C4X-105865)
- N-Butyl-2-pyrrolidinecarboxamide hydrochloride (CAS 1236266-64-0)
- (Z)-2-(1H-Indol-3-yl)-3-(pyridin-3-yl)acrylonitrile (CAS 57046-73-8)
- 1-Methyl-4-(3-pyrrolidinyl)pyrazole (CAS 1211542-11-8)
- 2-(4-Bromo-2-fluorophenoxy)acetonitrile (CAS 749932-68-1)
- 3-Methyl-4-nitrobenzaldehyde (CAS 18515-67-8)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
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