| CAS No. | 173540-04-0 |
| Molecular Formula | C9H5N3OS |
| Molecular Weight | 203.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Benzothiazol-2-yl-hydroxyimino-acetonitrile (CAS 173540-04-0) is a high-purity analytical reference standard with the molecular formula C9H5N3OS and a molecular weight of 203.22 g/mol.
The molecular framework of Benzothiazol-2-yl-hydroxyimino-acetonitrile (C9H5N3OS) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), Benzothiazol-2-yl-hydroxyimino-acetonitrile meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
| Molecular Formula | C9H5N3OS |
| Molecular Weight | 203.22 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |