7-Fluoro-4-methyl-2H-benzo[b][1,4]thiazin-3(4H)-one CAS 866154-48-5
| CAS No. | 866154-48-5 |
| Molecular Formula | C9H8FNOS |
| Molecular Weight | 197.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 7-Fluoro-4-methyl-2H-benzo[b][1,4]thiazin-3(4H)-one (C9H8FNOS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 197.23 g/mol, it falls into the medium-molecular-weight range. 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 supplies 7-Fluoro-4-methyl-2H-benzo[b][1,4]thiazin-3(4H)-one (CAS 866154-48-5), a certified reference material (molecular formula C9H8FNOS, MW 197.23 g/mol) for analytical method development and quality control.
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), 7-Fluoro-4-methyl-2H-benzo[b][1,4]thiazin-3(4H)-one 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.
Physical & Chemical Properties
| Molecular Formula | C9H8FNOS |
| Molecular Weight | 197.23 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Fluoro Standards
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- 4-fluoro-N,N-dimethyl-1H-pyrazole-1-sulfonamide (CAS 143535-54-0)
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Recommended Standards
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- 2-Chloro-N-cyclopentylnicotinamide (CAS 57841-73-3)
- 3-Amino-1-(3,4-difluorophenyl)piperidin-2-one (CAS 1344206-90-1)
- endo-BCN-PEG3-mal (CAS 2141976-33-0)
- (S)-2-((tert-butoxycarbonyl)amino)-4,4,4-trifluoro-3,3-dimethylbutanoic acid (CAS 2242426-52-2)
- 2-[(Trimethylsilyl)ethynyl]aniline (CAS 103529-16-4)
- 4-(Benzylthio)-5-chloropyridine-3-sulfonamide (CAS 1352525-78-0)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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