(E)-2-(4-chlorophenyl)-5,6,7,8-tetrahydrobenzo[d]imidazo[2,1-b]thiazole-3-carbaldehyde O-(2-chlorobenzoyl) oxime CAS 478041-91-7
| CAS No. | 478041-91-7 |
| Molecular Formula | C23H17Cl2N3O2S |
| Molecular Weight | 470.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(E)-2-(4-chlorophenyl)-5,6,7,8-tetrahydrobenzo[d]imidazo[2,1-b]thiazole-3-carbaldehyde O-(2-chlorobenzoyl) oxime (CAS 478041-91-7) is a high-purity analytical reference standard with the molecular formula C23H17Cl2N3O2S and a molecular weight of 470.37 g/mol.
(E)-2-(4-chlorophenyl)-5,6,7,8-tetrahydrobenzo[d]imidazo[2,1-b]thiazole-3-carbaldehyde O-(2-chlorobenzoyl) oxime (C23H17Cl2N3O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C23H17Cl2N3O2S |
| Molecular Weight | 470.37 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related E Standards
- (E)-{[4-(4-chlorophenyl)-7-thia-2,5-diazatricyclo[6.4.0.0^{2,6}]dodeca-1(8),3,5-trien-3-yl]methylidene}amino 4-chlorobenzoate (CAS 478041-88-2)
- (Z)-[(3-Chlorophenyl)methoxy]({2-[(4-chlorophenyl)sulfanyl]-1-{2,7-dimethylimidazo[1,2-a]pyridin-3-yl}ethylidene})amine (CAS 478047-84-6)
- (Z)-2-((4-chlorophenyl)thio)-1-(2,7-dimethylimidazo[1,2-a]pyridin-3-yl)ethan-1-one O-(4-chlorobenzyl) oxime (CAS 383148-24-1)
- 4-({[(4-chlorophenyl)methyl]sulfanyl}methyl)-6-[(4-chlorophenyl)sulfanyl]-2-(pyridin-2-yl)pyrimidine (CAS 338960-88-6)
- N-(2-Chlorophenyl)-2-{[3-ethyl-7-(4-methylphenyl)-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide (CAS 1040632-44-7)
- N-(3-chlorophenyl)-2-((3-ethyl-4-oxo-7-(p-tolyl)-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040632-48-1)
- N-(4-chlorophenyl)-2-((3-ethyl-4-oxo-7-(p-tolyl)-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040632-52-7)
- N-[(2-Chlorophenyl)methyl]-2-{[3-methyl-7-(4-methylphenyl)-4-oxo-3H,4H-thieno[3,2-d]pyrimidin-2-yl]sulfanyl}acetamide (CAS 1040675-60-2)
Recommended Standards
- Ethyl 2-({4-[5-chloro-1-(3-chlorophenyl)-6-oxo-1,6-dihydropyridazin-4-yl]piperazine-1-carbothioyl}amino)acetate (CAS 477867-35-9)
- Nicergoline EP Impurity H (CAS 192504-81-7)
- N-(2,4-Dichlorophenyl)-2-((5-(pyridin-4-yl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 477318-67-5)
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- Neoponcirin (Mixture of diastereomers) (CAS 2418540-64-2)
- 5-{[1-(4-Bromophenyl)-1H-pyrrol-2-yl]methylene}-1,3-dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione (CAS 428458-95-1)
- [(3,4-dimethoxyphenyl)methyl](ethyl)amine (CAS 40171-95-7)
- 1,3,5-Trimethyl-1H-pyrazole-4-carbohydrazide (CAS 477711-16-3)
- 2-Bromo-1-(4-chloro-2-hydroxy-phenyl)-ethanone (CAS 157068-00-3)
- Gentianine (CAS 439-89-4)
- Des-Ala35-Tirzepatide (CAS CATO-CPTD788939)
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