N1-[4-(4,5-dichloro-1H-imidazol-1-yl)phenyl]-2-(trifluoromethyl)benzene-1-sulphonamide CAS 649662-81-7
| CAS No. | 649662-81-7 |
| Molecular Formula | C16H10Cl2F3N3O2S |
| Molecular Weight | 436.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 436.24 g/mol gives N1-[4-(4,5-dichloro-1H-imidazol-1-yl)phenyl]-2-(trifluoromethyl)benzene-1-sulphonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N1-[4-(4,5-dichloro-1H-imidazol-1-yl)phenyl]-2-(trifluoromethyl)benzene-1-sulphonamide (CAS 649662-81-7), molecular formula C16H10Cl2F3N3O2S and molecular weight 436.24 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N1-[4-(4,5-dichloro-1H-imidazol-1-yl)phenyl]-2-(trifluoromethyl)benzene-1-sulphonamide (C16H10Cl2F3N3O2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 436.24 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C16H10Cl2F3N3O2S |
| Molecular Weight | 436.24 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
- N-[2-(4-Bromobenzenesulfonyl)ethyl]-3-(trifluoromethyl)benzamide (CAS 338956-10-8)
- 1-(Tert-butyl) 2-methyl (2S,4S)-4-(3-bromo-2,5-difluorophenoxy)pyrrolidine-1,2-dicarboxylate (CAS 2442510-68-9)
- Ethyl 1-[4-(2,4-dichlorophenyl)-1,3-thiazol-2-yl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate (CAS 955964-59-7)
- Ethyl 4-(2-(2-bromo-4-formyl-6-methoxyphenoxy)acetamido)benzoate (CAS 692275-42-6)
- 1-[(2-chlorophenyl)methyl]-3-methyl-1H-thieno[2,3-c]pyrazole-5-carboxylic acid (CAS 565171-05-3)
- 1,4-dioxaspiro[4.5]decan-8-ylhydrazine, oxalic acid (CAS 2044871-41-0)
- methyl 4-chloro-2-cyclopropyl-1,3-thiazole-5-carboxylate (CAS 1500183-05-0)
- ethanedicarbonimidoyl dicyanide (CAS 28321-79-1)
- 2-(Difluoromethyl)-3-methoxy-6-methylpyridine-5-carbonyl chloride (CAS 1806960-47-3)
- 3,4-Dichloroisothiazole-5-carbonitrile (CAS 18480-52-9)
- Ritonavir EP Impurity Q (CAS 1414933-82-6)
- (1-Nitroprop-1-en-2-yl)benzene (CAS 15795-70-7)
- 2-Chloropyridin-4-amine hydrochloride (CAS 2897-42-9)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
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