4-Chloro-3,4-dihydro-2h-1-benzothiopyran CAS 51926-00-2
| CAS No. | 51926-00-2 |
| Molecular Formula | C9H9ClS |
| Molecular Weight | 184.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 4-Chloro-3,4-dihydro-2h-1-benzothiopyran (CAS 51926-00-2), a certified reference material (molecular formula C9H9ClS, MW 184.69 g/mol) for analytical method development and quality control.
The molecular framework of 4-Chloro-3,4-dihydro-2h-1-benzothiopyran (C9H9ClS) is characterized by sulfur-containing functionality, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO manufactures 4-Chloro-3,4-dihydro-2h-1-benzothiopyran under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H9ClS |
| Molecular Weight | 184.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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- 2-(2-(Isopropylimino)-2,3-dihydrothiazol-4-yl)-7-methoxyquinolin-4(1H)-one (CAS 300831-05-4)
- (3-Amino-2-(aminomethyl)-2-methylpropyl)(tert-butyl)carbamic acid (CAS 210767-38-7)
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- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com