4-hydroxy-2-methylbenzenesulfonic acid CAS 7134-05-6
Purity >95%In StockPharmaceutical Standards
| CAS No. | 7134-05-6 |
| Molecular Formula | C7H8O4S |
| Molecular Weight | 188.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 4-hydroxy-2-methylbenzenesulfonic acid (CAS 7134-05-6) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C7H8O4S. Molecular weight: 188.20 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C7H8O4S |
| Molecular Weight | 188.20 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Sulfur Atoms | 1 |
Related hydroxy Standards
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Recommended Standards
- Policresulen impurity 21 (CAS 102014-39-1)
- Sivelestat Impurity 28 (CAS CATO-C4X-212328)
- Policresulen Impurity 12 (CAS 68127-34-4)
- 5-Fluoro-3,3-dimethyl-3H-indole (CAS 200061-84-3)
- 3,5-Dimethoxy-4-vinylbenzaldehyde (CAS 1822848-23-6)
- [5-(furan-2-yl)-1,2,4-oxadiazol-3-yl]methanamine hydrochloride (CAS 1609400-88-5)
- 3,4'-Bipyridine (CAS 4394-11-0)
- Cariprazine Impurity 26 (CAS CATO-C4X-240826)
- (E)-3-(3-chloro-5-fluoro-4-methoxyphenyl)acrylic acid (CAS 886501-39-9)
- Semaglutide impurity 91 (CAS CATO-C4X-222691)
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)
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