4H-Benzo[d][1,3]thiazine-2-thiol CAS 493-64-1
| CAS No. | 493-64-1 |
| Molecular Formula | C8H7NS2 |
| Molecular Weight | 181.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4H-Benzo[d][1,3]thiazine-2-thiol (CAS 493-64-1) is a high-purity analytical reference standard with the molecular formula C8H7NS2 and a molecular weight of 181.28 g/mol.
Structurally, 4H-Benzo[d][1,3]thiazine-2-thiol (C8H7NS2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. 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 181.28 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).
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 manufactures 4H-Benzo[d][1,3]thiazine-2-thiol 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 | C8H7NS2 |
| Molecular Weight | 181.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | 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.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related H Standards
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- 2-(Benzo[d][1,3]dioxol-5-ylamino)ethan-1-ol (CAS 81329-90-0)
- 2-(Benzo[d][1,3]dioxol-5-yloxy)ethan-1-amine (CAS 72955-85-2)
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- Benzo[c]isoxazole-3-carbonyl chloride (CAS 535992-89-3)
Recommended Standards
- 3,5-Dimethyl-1-pentyl-1h-pyrazol-4-amine (CAS 2587-08-8)
- 4-methyl-2-(thiophen-2-yl)-1,3-thiazole (CAS 89942-95-0)
- 3,4-Dihydro-2H-benzo[e][1,3]thiazine-2-thione (CAS 92808-77-0)
- 4-Methylbenzothiazole-2-thiol (CAS 2268-77-1)
- 4-Fluoro-2-(2,2-difluoroethoxy)nitrobenzene (CAS 1018053-84-3)
- Boc-Oxyma (CAS 1426821-11-5)
- 1-(1-Cyclopentyl-3-methyl-1H-pyrazol-4-yl)-N-((1-methyl-1H-pyrazol-5-yl)methyl)methanamine hydrochloride (CAS 1856056-82-0)
- Ketorolac Impurity 22 (CAS CATO-C4X-166922)
- di-tert-butyl((2S,3S)-3-(tert-butyl)-4-(2,6-dimethoxyphenyl)-2,3-dihydrobenzo[d][1,3]oxaphosphol-2-yl)phosphineoxide (CAS 2374143-28-7)
- (r)-2-Amino-2-(5-chloro-2-nitrophenyl)ethan-1-ol (CAS 1213028-07-9)
- 5-Chloro-N-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinazolin-2-amine (CAS 1644664-02-7)
- Lysine Impurity 10 HCl (CAS 104584-11-4)
- tert-Butyl 2-(((5-methylpyridin-2-yl)thio)methyl)piperidine-1-carboxylate (CAS 1353979-11-9)
- Cycloaspeptide A (CAS 109171-13-3)
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