2-(1-((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)ethylidene)-1H-indene-1,3(2H)-dione CAS 681844-86-0
| CAS No. | 681844-86-0 |
| Molecular Formula | C22H19N3O3 |
| Molecular Weight | 373.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(1-((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)ethylidene)-1H-indene-1,3(2H)-dione (CAS 681844-86-0) is a high-purity analytical reference standard with the molecular formula C22H19N3O3 and a molecular weight of 373.40 g/mol.
2-(1-((1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)amino)ethylidene)-1H-indene-1,3(2H)-dione (C22H19N3O3) 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).
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 | C22H19N3O3 |
| Molecular Weight | 373.40 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 3 |
Related Dimethyl Standards
- Dimethyl 2,6-Diisopropyl-4-(4-fluorophenyl)-pyridine-3,5-dicarboxylate (CAS 122549-42-2)
- 4-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-ethylphenyl)-1H-pyrazole-5-sulfonamide (CAS 1106778-22-6)
- 1,5-Dimethyl-4-[(3-oxo-5-phenyl-1-cyclohexenyl)amino]-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 946386-10-3)
- Dimethyl 5-(4-(tert-butyl)phenyl)-1H,3H-pyrrolo[1,2-c]thiazole-6,7-dicarboxylate (CAS 339113-82-5)
- N-(5,6-Dimethyl-1-propyl-1H-1,3-benzodiazol-4-yl)-4-methoxybenzene-1-sulfonamide (CAS 338423-72-6)
- O-(2,6-dimethyl-4-(2-(p-tolylthio)acetyl)phenyl) dimethylcarbamothioate (CAS 339100-09-3)
- 1,5-Dimethyl-4-phenyl-3-(1-tosylethyl)imidazolidin-2-one (CAS 1212191-69-9)
- 5-({3-[3-(2,5-Dimethyl-1H-pyrrol-1-yl)-2-thienyl]-1H-pyrazol-5-yl}amino)-5-hydroxy-3-hexanone (CAS 477762-16-6)
Recommended Standards
- 2-({[(9h-fluoren-9-yl)methoxy]carbonyl}amino)-6-methylbenzoic acid (CAS 870150-57-5)
- 2-[(Fmoc-amino)methyl]benzoic Acid (CAS 219640-94-5)
- 2-({[(9h-fluoren-9-yl)methoxy]carbonyl}(phenyl)amino)acetic acid (CAS 909114-68-7)
- 2-Cyano-N-(1,1-dioxidotetrahydrothiophen-3-yl)-3-(5-(4-fluorophenyl)furan-2-yl)acrylamide (CAS 518350-16-8)
- 6,8-Dimethyl-4-oxo-4H-chromene-2-carboxylic acid (CAS 288399-57-5)
- 1-Benzylimidazolidine-2,4-dione (CAS 6777-05-5)
- N-(2,4-dichlorophenyl)-2-hydroxypropanamide (CAS 1267051-52-4)
- Asparagine EP Impurity G (CAS CATO-C4X-24423)
- 1-(4-CHlorobenzyl)pyrrolidine hydrochloride (CAS 16912-02-0)
- (S)-2-Amino-N-((S)-1-benzylpyrrolidin-3-yl)-3-methylbutanamide (CAS 1401665-24-4)
- 3-(5-Methyl-1H-tetrazol-1-yl)benzoic acid (CAS 799262-37-6)
- 1-(4-Fluorophenyl)-5-methyl-1H-pyrazole-4-carbohydrazide (CAS 618092-48-1)
- 5-Bromo-4-nitroisothiazole (CAS 54390-96-4)
- Semaglutide impurity 24 (CAS CATO-C4X-222624)
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