| CAS No. | 2592651-16-4 |
| Molecular Formula | C12H8N4OS |
| Molecular Weight | 256.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 256.28 g/mol gives 5-[2-(4-methylthiazol-2-yl)ethynyl]isoxazolo[5,4-b]pyridin-3-amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-[2-(4-methylthiazol-2-yl)ethynyl]isoxazolo[5,4-b]pyridin-3-amine (CAS 2592651-16-4), a certified reference material (molecular formula C12H8N4OS, MW 256.28 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 5-[2-(4-methylthiazol-2-yl)ethynyl]isoxazolo[5,4-b]pyridin-3-amine is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 256.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
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.
| Molecular Formula | C12H8N4OS |
| Molecular Weight | 256.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |