1-(4-Chlorophenyl)-3-(4-methylbenzenesulfonyl)urea CAS 3955-50-8
| CAS No. | 3955-50-8 |
| Molecular Formula | C14H13ClN2O3S |
| Molecular Weight | 324.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(4-Chlorophenyl)-3-(4-methylbenzenesulfonyl)urea (CAS 3955-50-8) is a high-purity analytical reference standard with the molecular formula C14H13ClN2O3S and a molecular weight of 324.78 g/mol.
The molecular framework of 1-(4-Chlorophenyl)-3-(4-methylbenzenesulfonyl)urea (C14H13ClN2O3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H13ClN2O3S |
| Molecular Weight | 324.78 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Chlorophenyl Standards
- Methyl 3-{[(4-chlorophenyl)carbamoyl]amino}-4-methylthiophene-2-carboxylate (CAS 1330750-57-6)
- Methyl 3-[(4-chlorophenyl)sulfonylmethyl]benzoate (CAS 143427-34-3)
- 2-((4-Chlorophenyl)sulfonyl)-1-(4-methoxyphenyl)ethan-1-one (CAS 61820-97-1)
- 3-(((4-Chlorophenyl)sulfonyl)methyl)-N-hydroxybenzimidamide (CAS 583059-52-3)
- Ethyl 4-(4-chlorophenyl)sulfonylbenzoate (CAS 65082-46-4)
- 1-(4-chlorophenyl)-6-oxo-4-(propylsulfanyl)-1,6-dihydro-3-pyridazinecarboxylic acid 339031-12-8 KS-00003E8E (CAS 339031-12-8)
- (S)-6-((4-Chlorophenyl)(1H-1,2,4-triazol-1-yl)methyl)-1-methyl-1H-benzo[d][1,2,3]triazole (CAS 129731-10-8)
- 1-(4-Chlorophenyl)-4-ethoxy-[1,2,4]triazolo[4,3-a]quinoxaline (CAS 138679-22-8)
Recommended Standards
- {[1-(4-chlorobenzyl)-4-formyl-3-methyl-1H-pyrazol-5-yl]thio}acetic acid (CAS 956568-50-6)
- 2-((1-(2-Chlorobenzyl)-4-formyl-3-methyl-1H-pyrazol-5-yl)thio)acetic acid (CAS 956568-51-7)
- (3E)-3-{[(2-chloro-1,3-thiazol-5-yl)methoxy]imino}-1-(4-methoxyphenyl)propan-1-one (CAS 339105-53-2)
- 2-(6-chloro-3-pyridinyl)-2-(phenylsulfonyl)acetaldehyde O-methyloxime (CAS 478048-56-5)
- N-((1-(2-Fluoroethyl)-1H-pyrazol-4-yl)methyl)-3-methylbutan-1-amine hydrochloride (CAS 1856095-99-2)
- 5-Chloro-8-methylquinazoline (CAS 1357301-41-7)
- (5,6-Dichloropyridin-3-yl)(morpholino)methanone (CAS 919784-85-3)
- Atogepant Impurity 64 (CAS CATO-C4X-328564)
- tert-Butyl 3-amino-1-oxa-8-azaspiro[4.5]decane-8-carboxylate oxalate (CAS 2205334-86-5)
- 2-(2,2-Difluoro-2H-1,3-benzodioxol-4-yl)acetic acid (CAS 531508-33-5)
- N-(3-chloro-4-methylphenyl)-2-(2-formylphenoxy)acetamide (CAS 553674-60-5)
- Benzyl (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)carbamate (CAS 363186-06-5)
- 8-((Dimethylamino)methyl)-3-methyl-3,7-dihydro-1H-purine-2,6-dione (CAS 868143-58-2)
- (Leu31,Pro34)-Peptide YY (human) trifluoroacetate salt (CAS 179986-95-9)
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