3,4-Bis(4-methoxyphenyl)-1-(2-methylbenzoyl)-1H-pyrazole CAS 956796-38-6
| CAS No. | 956796-38-6 |
| Molecular Formula | C25H22N2O3 |
| Molecular Weight | 398.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,4-Bis(4-methoxyphenyl)-1-(2-methylbenzoyl)-1H-pyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies 3,4-Bis(4-methoxyphenyl)-1-(2-methylbenzoyl)-1H-pyrazole (CAS 956796-38-6), a certified reference material (molecular formula C25H22N2O3, MW 398.45 g/mol) for analytical method development and quality control.
3,4-Bis(4-methoxyphenyl)-1-(2-methylbenzoyl)-1H-pyrazole (C25H22N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C25H22N2O3 |
| Molecular Weight | 398.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Bis Standards
- 4-Methoxyphenyl 4-((6-(acryloyloxy)hexyl)oxy)benzoate (CAS 82200-53-1)
- (3-((4-Methoxyphenyl)sulfonyl)azetidin-1-yl)(2-phenyl-2H-1,2,3-triazol-4-yl)methanone (CAS 1797276-06-2)
- 1-{3-[3-(4-methoxyphenyl)pyrazolo[1,5-a]pyrimidin-7-yl]phenyl}-3,3-dimethylazetidin-2-one (CAS 861206-54-4)
- 2-[(5-{1-[(4-Methoxyphenyl)amino]ethyl}-4-phenyl-4H-1,2,4-triazol-3-yl)thio]acetohydrazide (CAS 1306739-37-6)
- 4-[(4-Methoxyphenyl)methyl]-3-[1-(thiophene-3-carbonyl)piperidin-4-yl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 1775311-59-5)
- Ethyl 2-((5-(2-(4-methoxyphenyl)-1-phenylethyl)-1,3,4-oxadiazol-2-yl)thio)acetate (CAS 78613-19-1)
- 2-(4-Methoxyphenyl)-4-oxo-4H-chromen-3-yl cinnamate (CAS 22812-33-5)
- (2Z)-3-(2-Methoxyphenyl)-2-phenyl-1-(4-phenylpiperazin-1-yl)prop-2-en-1-one (CAS 478064-11-8)
Recommended Standards
- 2-(3-(Methylthio)-1H-1,2,4-triazol-5-yl)-3-(thiophen-2-yl)-6-(trifluoromethyl)thieno[3,2-b]pyridine (CAS 478066-09-0)
- 3,9-Di-tert-butyl 6-methyl 7-oxo-3,9-diazabicyclo[3.3.1]nonane-3,6,9-tricarboxylate (CAS 878002-62-1)
- 1'-Benzyl-3',3'-dimethyl-6-nitrospiro[chromene-2,2'-indoline] (CAS 58273-90-8)
- 3-{4-[(4-Fluorophenyl)sulfonyl]piperazino}-6-phenylpyridazine (CAS 478077-49-5)
- Dihydro Normorphine 6-O-β-D-Glucuronide (CAS 561323-10-2)
- (S)-1-(4-(Methylsulfonyl)phenyl)ethanamine (CAS 1037798-64-3)
- 5-Cyclopropyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 436088-48-1)
- 1-Ethyl-3-morpholinothiourea (CAS 356773-27-8)
- 1-Phenylhex-5-en-1-amine (CAS 110775-38-7)
- Imidazo[1,2-d][1,2,4]triazin-2-one (CAS 256408-48-7)
- (R)-6-((benzyloxy)carbonyl)-6-azaspiro[2.5]Octane-1-carboxylic acid (CAS 1539277-95-6)
- 2-[4,5-Dihydro-4-(2-methylpropyl)-2-oxazolyl]pyridine (CAS 173601-41-7)
- 4-Methyl-1,4-dihydropyrido[3,4-d]pyrimidine (CAS 51752-72-8)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
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