2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one CAS 452949-78-9
| CAS No. | 452949-78-9 |
| Molecular Formula | C21H15NO2S |
| Molecular Weight | 345.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 345.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one (CAS 452949-78-9), molecular formula C21H15NO2S and molecular weight 345.41 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-[(3-Phenoxyphenyl)methylidene]-3,4-dihydro-2H-1,4-benzothiazin-3-one 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 | C21H15NO2S |
| Molecular Weight | 345.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Phenoxyphenyl Standards
- (3Z)-3-{[(4-phenoxyphenyl)amino]methylidene}-1,3-dihydro-2-benzothiophen-1-one (CAS 338954-43-1)
- 4-{[(4-phenoxyphenyl)amino]methylidene}-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one (CAS 477850-97-8)
- 4-(((4-Phenoxyphenyl)amino)methyl)phthalazin-1(2H)-one (CAS 305368-10-9)
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- 3-Ethyl-5-[(3-phenoxyphenyl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 359899-51-7)
- 2-((4-Phenoxyphenyl)amino)pyridine-3-sulfonamide (CAS 1251677-51-6)
- 3-(4-Phenoxyphenyl)-5H-indeno[1,2-c]pyridazin-5-one (CAS 337921-77-4)
- Ethyl 2-((4-phenoxyphenyl)amino)thiazole-4-carboxylate (CAS 1209703-12-7)
Recommended Standards
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