o-Tolyl methanesulfonate CAS 1009-01-4
| CAS No. | 1009-01-4 |
| Molecular Formula | C8H10O3S |
| Molecular Weight | 186.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
o-Tolyl methanesulfonate (CAS 1009-01-4), molecular formula C8H10O3S and molecular weight 186.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, o-Tolyl methanesulfonate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 186.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures o-Tolyl methanesulfonate 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 | C8H10O3S |
| Molecular Weight | 186.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 1957 |
| Sulfur Atoms | 1 |
Related o Standards
- m-Tolyl methanesulfonate (CAS 1077-02-7)
- P-tolyl methanesulfonate (CAS 17177-63-8)
- 3-(p-Tolyl)pyrimidin-4(3H)-one (CAS 109853-42-1)
- 5-(O-tolyl)furan-2-carbaldehyde (CAS 110360-09-3)
- 6-(o-Tolyl)pyridazin-3(2H)-one (CAS 1105194-00-0)
- 5-(o-tolyl)Pyrimidin-2-ol (CAS 1111108-27-0)
- 5-(m-Tolyl)pyrimidin-2-ol (CAS 1111108-52-1)
- 5-(O-tolyl)pyrazin-2-ol (CAS 1159818-46-8)
Recommended Standards
- N,N-Dimethylpyridine-2-sulfonamide (CAS 100868-78-8)
- Methyl 2-(aminomethyl)-4-methylthiazole-5-carboxylate (CAS 1017393-27-9)
- N,N-Dimethylpyridine-4-sulfonamide (CAS 100395-59-3)
- 2-(1-Aminoethyl)-4-methylthiazole-5-carboxylic acid (CAS 1017422-58-0)
- (2R,3S)-3-Methylpent-4-en-2-ol (CAS 74080-51-6)
- 3-Oxo-3-(oxolan-3-yl)propanenitrile (CAS 1186610-03-6)
- 6-Methyl-3-nitro-2-oxo-1,2-dihydropyridin-4-yl 3-methylbutanoate (CAS 868679-35-0)
- N1-cyclopentyl-2-methylpropane-1,2-diamine (CAS 1249087-78-2)
- 5-(2-methoxyacetamido)-2-methylbenzoic acid (CAS 1283514-27-1)
- Brivudine Impurity 9 (CAS 59864-10-7)
- 5-Methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydro-2H-benzo[b][1,4]oxazine (CAS 1154740-49-4)
- 2-(4-Cyanopyridin-3-yl)ethyl acetate, 97% (CAS 865611-00-3)
- 2-(2-Acetylphenyl)oxazol-5(4H)-one (CAS 62100-36-1)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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