4-Mercapto-3-methylbenzoic acid CAS 948833-50-9
| CAS No. | 948833-50-9 |
| Molecular Formula | C8H8O2S |
| Molecular Weight | 168.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Mercapto-3-methylbenzoic acid (C8H8O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-Mercapto-3-methylbenzoic acid (CAS 948833-50-9), molecular formula C8H8O2S and molecular weight 168.21 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 4-Mercapto-3-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 | C8H8O2S |
| Molecular Weight | 168.21 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.) | 1987 |
| Sulfur Atoms | 1 |
Related Mercapto Standards
- 3-Mercapto-2,3-dihydrobenzofuran-6-ol (CAS 1039963-37-5)
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- 2-Mercapto-6-methylbenzoic acid (CAS 17839-53-1)
- 3-Mercapto-2-methylbenzoic acid (CAS 188700-62-1)
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Recommended Standards
- 4-Mercaptophenyl acetic acid, 97% (CAS 39161-84-7)
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- 4-Fluoro-1-n-propylbenzene-1,2-diamine (CAS 300798-95-2)
- 2-(3-(Azetidin-1-ylmethyl)benzoyl)benzonitrile (CAS 898771-36-3)
- 2-(1-benzylpyrrolidin-3-yl)acetic acid hydrochloride (CAS 1354957-82-6)
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- 1-(2-((3,5-Dimethyl-1-propyl-1H-pyrazol-4-yl)sulfonyl)ethyl)piperazine (CAS 1713477-10-1)
- (1s,2s,3s,4r)-3-Aminobicyclo[2.2.1]heptane-2-carboxylic acid (CAS 76198-36-2)
- Ethyl 2-(4-cyano-1H-1,2,3-triazol-1-yl)acetate (CAS 202003-10-9)
- 4-Difluoromethoxy-3-fluoro-5-formylpyridine (CAS 1806333-97-0)
- Ethyl 3-((4-bromo-2-methyl-5-oxo-1-phenyl-2,5-dihydro-1H-pyrazol-3-yl)methoxy)benzoate (CAS 937605-03-3)
- Ethyl 1,2,3,4-tetrahydroisoquinoline-7-carboxylate (CAS 1557834-79-3)
- Lixisenatide (CAS 320367-13-3)
Why CATO?
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