4-Methylthiazole-2-carboxylic Acid CAS 14542-16-6
| CAS No. | 14542-16-6 |
| Molecular Formula | C5H5NO2S |
| Molecular Weight | 143.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Methylthiazole-2-carboxylic 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.
4-Methylthiazole-2-carboxylic Acid (CAS 14542-16-6), molecular formula C5H5NO2S and molecular weight 143.16 g/mol, is a CATO reference standard with documented purity and traceability.
4-Methylthiazole-2-carboxylic Acid (C5H5NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C5H5NO2S |
| Molecular Weight | 143.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methylthiazole Standards
- 5-Methylthiazole-4-carboxylic acid (CAS 120237-76-5)
- 2-Methylthiazole-5-carboxylic Acid (CAS 40004-69-1)
- 4-Methylthiazole-5-carboxylic Acid (CAS 20485-41-0)
- 5-Methylthiazole-2-carboxylic Acid (CAS 61291-21-2)
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- 2-Methylthiazole-4-carboxamide (CAS 31825-95-3)
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Recommended Standards
- Methyl 5-thiazolecarboxylate (CAS 14527-44-7)
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- 4-Methylisothiazole-3-carboxylic acid (CAS 1507952-32-0)
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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