3-Chloropyridine-2-thiol CAS 5897-94-9
| CAS No. | 5897-94-9 |
| Molecular Formula | C5H4ClNS |
| Molecular Weight | 145.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Chloropyridine-2-thiol 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.
3-Chloropyridine-2-thiol (CAS 5897-94-9), molecular formula C5H4ClNS and molecular weight 145.61 g/mol, is a CATO reference standard with documented purity and traceability.
3-Chloropyridine-2-thiol (C5H4ClNS) contains a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C5H4ClNS |
| Molecular Weight | 145.61 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| 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.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloropyridine Standards
- 2-Chloropyridine-4-thiol (CAS 106962-88-3)
- 3-Chloropyridine-4-thiol (CAS 1247828-52-9)
- 2-Chloropyridine-3-thiol (CAS 74198-95-1)
- 4-Chloropyridine-2-thiol (CAS 204996-08-7)
- 6-Chloropyridine-3-thiol, 97% (CAS 558466-12-9)
- 3-Chloropyridine-2,4-diol (CAS 103792-81-0)
- 6-Chloropyridine-3,4-diol (CAS 1196156-68-9)
- 2-Chloropyridine-3,5-diol (CAS 1227573-04-7)
Recommended Standards
- [(4-Chlorobut-2-yn-1-yl)sulfanyl]carbonitrile (CAS 113079-33-7)
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- 5-Chloro-2,2-dimethylpentanenitrile (CAS 4207-54-9)
- Benzoyl-d5 Chloride (CAS 43019-90-5)
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