cis-[2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methyl p-Tolylsulfonate CAS 155047-76-0
| CAS No. | 155047-76-0 |
| Molecular Formula | C21H20Cl2N2O5S |
| Molecular Weight | 483.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
cis-[2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methyl p-Tolylsulfonate (CAS 155047-76-0), molecular formula C21H20Cl2N2O5S and molecular weight 483.36 g/mol, is a CATO reference standard with documented purity and traceability.
cis-[2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methyl p-Tolylsulfonate (C21H20Cl2N2O5S) contains a flavonoid 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. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C21H20Cl2N2O5S |
| Molecular Weight | 483.36 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related cis Standards
- (2E)-1-{4-[(2,4-dichlorophenyl)methoxy]phenyl}-3-{[2-(morpholin-4-yl)phenyl]amino}prop-2-en-1-one (CAS 478039-19-9)
- 2-[(2,6-Dichlorophenyl)methanesulfonyl]-4,5-diphenyl-1-(prop-2-en-1-yl)-1H-imidazole (CAS 339277-33-7)
- (4E)-4-{[(3,5-dichlorophenyl)amino]methylidene}-1-[4-(trifluoromethoxy)phenyl]-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one (CAS 338403-28-4)
- (3-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl)(4-(3-(trifluoromethyl)phenyl)piperazin-1-yl)methanone (CAS 378753-06-1)
- (5-(3,4-Dichlorophenyl)-2,3-dihydro-1H-pyrrolizine-6,7-diyl)bis(methylene) bis(isopropylcarbamate) (CAS 74296-42-7)
- 2-(2,4-Dichlorophenyl)-3',5-dimethyl-1'-(4-phenylthiazol-2-yl)-1'H,2H-[3,4'-bipyrazol]-5'-ol (CAS 246021-97-6)
- 2'-(4-(2,4-Dichlorophenyl)thiazol-2-yl)-5,5'-dimethyl-2-phenyl-1',2'-dihydro-2H,3'H-[3,4'-bipyrazol]-3'-one (CAS 245039-21-8)
- 1023504-62-2 3-(2,3-Dichlorophenyl)-1-(4-((6,7-dimethoxy(3,4-dihydroisoquinolyl))methyl)phenyl)urea MFCD03839403 (CAS 1023504-62-2)
Recommended Standards
- Nucpe1 (CAS 1404091-23-1)
- Onametostat (JNJ-64619178) (CAS 2086772-26-9)
- Itraconazole Impurity 37 (CAS 154003-23-3)
- Ketoconazole EP Impurity E (CAS 134071-44-6)
- 5-(N,N-dimethylsulfamoyl)-2-methoxybenzoic acid (CAS 93798-20-0)
- Methyl 2-acetyl-6-formylisonicotinate (CAS 1393569-00-0)
- 1-(4-Aminophenyl)propan-1-ol (CAS 6332-13-4)
- 1,1-Difluoro-5-azaspiro[2.6]nonane (CAS 1393572-17-2)
- 1-Hydroxybutan-2-one (CAS 5077-67-8)
- (S)-1-(4,5-Dimethoxy-2-nitrophenyl)ethan-1-ol (CAS 1354424-29-5)
- Tegoprazan Impurity 120 (CAS CATO-C4X-2297120)
- 3-methyl-1-(piperidin-4-yl)pyrrolidin-3-ol (CAS 1697112-38-1)
- 1’H-Spiro[piperidine-4,4’-quinolin]-2’(3’H)-one (CAS 159634-63-6)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
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