3,4,5-Trimethoxybenzenesulfonic acid CAS 42771-33-5
| CAS No. | 42771-33-5 |
| Molecular Formula | C9H12O6S |
| Molecular Weight | 248.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4,5-Trimethoxybenzenesulfonic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,4,5-Trimethoxybenzenesulfonic acid (CAS 42771-33-5), molecular formula C9H12O6S and molecular weight 248.25 g/mol, is a CATO reference standard with documented purity and traceability.
3,4,5-Trimethoxybenzenesulfonic acid (C9H12O6S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 3,4,5-Trimethoxybenzenesulfonic 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 | C9H12O6S |
| Molecular Weight | 248.25 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Sulfur Atoms | 1 |
Recommended Standards
- 3-(3-Fluoro-4-morpholinophenyl)-3-oxopropanenitrile (CAS 861211-70-3)
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- 2-[1-(4-fluorophenyl)-3,5-dimethyl-1h-pyrazol-4-yl]acetic acid (CAS 926249-83-4)
- 5-Fluoro-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-4-carbaldehyde (CAS 2768872-25-7)
- 1-[2-[(4-Nitrophenyl)methoxy]phenyl]ethanone (CAS 32437-48-2)
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- 2-(Sec-butoxymethyl)benzaldehyde (CAS 1378803-02-1)
- 4,7-Dihydroxyquinolin-2(1H)-one (CAS 1206788-26-2)
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- 5-Methyl-N-(2-(trifluoromethyl)phenyl)isoxazole-3-carboxamide (CAS 145440-85-3)
- LECANORIC ACID (CAS 480-56-8)
- Semaglutide impurity 210 (CAS CATO-C4X-2226210)
Why CATO?
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