(E)-2-(4-chlorobenzylidene)-7-(4-methoxyphenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one CAS 337921-35-4
| CAS No. | 337921-35-4 |
| Molecular Formula | C29H21ClO3 |
| Molecular Weight | 452.93 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (E)-2-(4-chlorobenzylidene)-7-(4-methoxyphenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one.
(E)-2-(4-chlorobenzylidene)-7-(4-methoxyphenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one (CAS 337921-35-4), molecular formula C29H21ClO3 and molecular weight 452.93 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C29H21ClO3, (E)-2-(4-chlorobenzylidene)-7-(4-methoxyphenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 452.93 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), (E)-2-(4-chlorobenzylidene)-7-(4-methoxyphenoxy)-3-phenyl-2,3-dihydro-1H-inden-1-one 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.
Physical & Chemical Properties
| Molecular Formula | C29H21ClO3 |
| Molecular Weight | 452.93 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
Related E Standards
- 1,2-Bis(4-chlorobenzylidene)hydrazine (CAS 3510-48-3)
- 4-(2-Chlorobenzylidene)-1-((4-nitrobenzylidene)amino)-2-phenyl-1H-imidazol-5(4H)-one (CAS 126293-35-4)
- 1-((2-Chlorobenzylidene)amino)-4-(4-nitrobenzylidene)-2-phenyl-1H-imidazol-5(4H)-one (CAS 126293-47-8)
- (E)-2-((4-chlorobenzylidene)amino)-1-(4-methoxybenzyl)-4-phenyl-1H-pyrrole-3-carbonitrile (CAS 338397-39-0)
- Methyl 2-(2-chlorobenzylidene)-5-(4-(methoxycarbonyl)phenyl)-7-methyl-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 609795-49-5)
- 5-(2-Chlorobenzylidene)-3-(2,4-dichlorobenzoyl)-2-thioxoimidazolidin-4-one (CAS 565196-32-9)
- 5-(3-Chlorobenzylidene)-3-((6-methoxy-2-methylquinolin-4-yl)amino)-2-methyl-3,5-dihydro-4H-imidazol-4-one (CAS 85986-74-9)
- 5-(2-Chlorobenzylidene)-2-(4-isopropoxyphenyl)thiazolo[3,2-b][1,2,4]triazol-6(5H)-one (CAS 371216-13-6)
Recommended Standards
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- Methyl 4-chloro-1-trityl-1H-pyrrolo[2,3-b]pyridine-5-carboxylate (CAS 2436537-65-2)
- Ethyl tetrahydro-1H-pyrrolizine-7a(5H)-carboxylate (CAS 78449-71-5)
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- 5-(tert-Butyl)-2-nitrobenzoic Acid (CAS 60772-71-6)
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- 2-Chloro-6-fluorophenylhydrazine Hydrochloride (CAS 529512-79-6)
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- Semaglutide impurity 46 (CAS CATO-C4X-222646)
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