5-Oxo-5H-thiazolo[3,2-a]pyridine-3-carboxylic acid CAS 2387597-30-8
| CAS No. | 2387597-30-8 |
| Molecular Formula | C8H5NO3S |
| Molecular Weight | 195.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 195.20 g/mol gives 5-Oxo-5H-thiazolo[3,2-a]pyridine-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Oxo-5H-thiazolo[3,2-a]pyridine-3-carboxylic acid (CAS 2387597-30-8), molecular formula C8H5NO3S and molecular weight 195.20 g/mol, is a CATO reference standard with documented purity and traceability.
5-Oxo-5H-thiazolo[3,2-a]pyridine-3-carboxylic acid (C8H5NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H5NO3S |
| Molecular Weight | 195.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- 5-Oxo-5H-thiazolo[3,2-a]pyridine-2-carboxylic acid (CAS 2387596-21-4)
- 5-Oxo-5H-thiazolo[3,2-a]pyridine-7-carboxylic acid (CAS 2387596-90-7)
- 5-Nitrobenzo[d]thiazol-2-amine (CAS 73458-39-6)
- 6-Acetyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one (CAS 343375-14-4)
- 4-HB-MTS 4-Hydroxybenzyl Methanethiosulfonate 491868-12-3 Methanesulfonothioic Acid (4-Hydroxyphenyl)methyl Ester (CAS 491868-12-3)
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