3-[3-(2,6-Dichlorophenyl)-5-methyl-1,2-oxazol-4-yl]-1-[3-methyl-4-(propan-2-yl)phenyl]urea CAS 329702-81-0
| CAS No. | 329702-81-0 |
| Molecular Formula | C21H21Cl2N3O2 |
| Molecular Weight | 418.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-[3-(2,6-Dichlorophenyl)-5-methyl-1,2-oxazol-4-yl]-1-[3-methyl-4-(propan-2-yl)phenyl]urea (CAS 329702-81-0), a certified reference material (molecular formula C21H21Cl2N3O2, MW 418.32 g/mol) for analytical method development and quality control.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3-[3-(2,6-Dichlorophenyl)-5-methyl-1,2-oxazol-4-yl]-1-[3-methyl-4-(propan-2-yl)phenyl]urea is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 418.32 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures 3-[3-(2,6-Dichlorophenyl)-5-methyl-1,2-oxazol-4-yl]-1-[3-methyl-4-(propan-2-yl)phenyl]urea 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 | C21H21Cl2N3O2 |
| Molecular Weight | 418.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichlorophenyl Standards
- N-(3,4-Dichlorophenyl)-5-methyl-12-oxo-5H,5aH,6H,7H,8H,9H,10H,12H-azepino[2,1-b]quinazoline-3-carboxamide (CAS 1775347-37-9)
- 543686-34-6 (3-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl)-N-(4-(diethylamino)phenyl)formamide MFCD01567353 (CAS 543686-34-6)
- (2E)-3-{4-[(2,4-dichlorophenyl)methoxy]phenyl}-N-[(thiophen-2-yl)methyl]prop-2-enamide (CAS 477888-80-5)
- 2-(2-{2-[(3,4-dichlorophenyl)amino]-1,3-thiazol-4-yl}ethyl)-2,3-dihydro-1H-isoindole-1,3-dione (CAS 861211-34-9)
- 2-{4-[5-(2,4-dichlorophenyl)-1H-pyrazol-3-yl]piperidin-1-yl}-3-nitropyridine (CAS 1024018-46-9)
- (3-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl)(4-(pyrimidin-2-yl)piperazin-1-yl)methanone (CAS 546062-79-7)
- 3-{[(2,6-dichlorophenyl)methyl]sulfanyl}-5-[(E)-2-(phenylamino)ethenyl]-1,2-thiazole-4-carbonitrile (CAS 338778-53-3)
- 4-[(2,3-Dichlorophenyl)sulfanyl]-6-(4-methylphenyl)-2-(methylsulfanyl)pyrimidine-5-carbonitrile (CAS 303985-08-2)
Recommended Standards
- 3-[1-(3-Aminophenyl)-3-tert-Butyl-1H-pyrazol-5-yl]-1-(2,3-dichlorophenyl)urea (CAS 227622-98-2)
- Butyl 4-(3-bromophenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate (CAS 5473-80-3)
- Ethyl 4-(4-bromophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate (CAS 292853-25-9)
- 7-Fluoro-4-(4-fluorophenyl)-2-(4-(trifluoromethoxy)phenyl)phthalazin-1(2H)-one (CAS 161716-21-8)
- 3,4-Dichloro-5-fluorotoluene (CAS 1803820-64-5)
- 3-Hydroxy-5-(trifluoromethyl)picolinaldehyde (CAS 1211528-13-0)
- 6-Bromo-1-methylindoline-2,3-dione (CAS 667463-64-1)
- 5-Methyl-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxylic acid (CAS 854405-74-6)
- 3-Methoxy-4-(thiazol-4-ylmethoxy)benzaldehyde (CAS 923787-52-4)
- β-Histine-d (CAS 244094-70-0)
- 4-(4-Bromobenzoyl)-8-propyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326811-13-5)
- 2-(chloromethyl)-1-ethyl-5-fluoro-1H-1,3-benzodiazole (CAS 1154626-76-2)
- 6-Chloro-3-(difluoromethyl)-5-iodopyridine-2-sulfonamide (CAS 1805390-59-3)
- C-Peptide（dog） (CAS 39016-05-2)
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