| CAS No. | 890093-93-3 |
| Molecular Formula | C8H5ClN6OS |
| Molecular Weight | 268.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(5-(5-Chlorothiophen-2-yl)-1H-1,2,3-triazol-1-yl)-1,2,5-oxadiazol-3-amine.
4-(5-(5-Chlorothiophen-2-yl)-1H-1,2,3-triazol-1-yl)-1,2,5-oxadiazol-3-amine (CAS 890093-93-3), molecular formula C8H5ClN6OS and molecular weight 268.68 g/mol, is a CATO reference standard with documented purity and traceability.
4-(5-(5-Chlorothiophen-2-yl)-1H-1,2,3-triazol-1-yl)-1,2,5-oxadiazol-3-amine (C8H5ClN6OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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.
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 | C8H5ClN6OS |
| Molecular Weight | 268.68 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |