2-Methyl-4-(methylthio)benzoic acid CAS 118939-08-5
| CAS No. | 118939-08-5 |
| Molecular Formula | C9H10O2S |
| Molecular Weight | 182.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Methyl-4-(methylthio)benzoic acid (CAS 118939-08-5), molecular formula C9H10O2S and molecular weight 182.24 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Methyl-4-(methylthio)benzoic acid (C9H10O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 182.24 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 2-Methyl-4-(methylthio)benzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H10O2S |
| Molecular Weight | 182.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-Methyl-3-(methylthio)benzoic acid (CAS 1149384-42-8)
- 2-(Methylthio)-N-(pyridin-3-yl)acetamide (CAS 1223255-86-4)
- 4-(Methylthio)phenylacetic acid (CAS 16188-55-9)
- 4-Methyl-3-(methylthio)benzoic acid (CAS 166811-59-2)
- 1-(5-Methyl-2-(methylthio)pyrimidin-4-yl)ethanone (CAS 1823887-76-8)
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Recommended Standards
- (Dimethylsulfamoyl)(2-hydroxyethyl)methylamine (CAS 1175697-76-3)
- 2-(Benzo[d][1,3]dioxol-5-yl)ethane-1-thiol (CAS 119055-46-8)
- n-Ethyl-4-sulfanylpyridine-2-carboxamide (CAS 1154593-09-5)
- 4-(2-(4-Bromophenyl)-2H-1,2,3-triazol-4-yl)but-3-en-2-one (CAS 121650-19-9)
- 2-(5-Ethynylthiophen-2-yl)-1,3-dioxolane (CAS 1411766-65-8)
- N-(4-Methoxynaphthalen-1-yl)-5-methylisoxazole-3-carboxamide (CAS 941903-46-4)
- 1-(4-Chloro-5-methylpyrimidin-2-yl)piperidin-4-ol (CAS 1261230-25-4)
- n-[3-(aminomethyl)phenyl]butanamide (CAS 918810-69-2)
- 1-((4-Chloro-3-methoxyphenyl)sulfonyl)-1H-imidazole (CAS 1206125-36-1)
- Tris(4-ethynylphenyl)amine (CAS 189178-09-4)
- Ilaprazole Impurity 209 (CAS CATO-C4X-1130209)
- Ethyl 2-(2-(cyclohexanecarbonyl)hydrazinyl)-2-oxoacetate (CAS 1325307-05-8)
- Venetoclax Impurity 123 (CAS CATO-C4X-2495123)
- Neuropeptide W-23 (rat) (CAS 383415-89-2)
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