2-((Dimethylamino)methylene)-5-(2-(1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentanone CAS 88340-85-6
| CAS No. | 88340-85-6 |
| Molecular Formula | C21H26N2O |
| Molecular Weight | 322.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-((Dimethylamino)methylene)-5-(2-(1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentanone (CAS 88340-85-6), molecular formula C21H26N2O and molecular weight 322.44 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-((Dimethylamino)methylene)-5-(2-(1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentanone (C21H26N2O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), 2-((Dimethylamino)methylene)-5-(2-(1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentanone 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 | C21H26N2O |
| Molecular Weight | 322.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 12-epi Leukotriene B4 (CAS 83709-73-3)
- 2,3-Dimethyl-2-(4-methylpiperazinomethyl) benzophenone (CAS 898783-13-6)
- N1-(2-Cyanophenyl)-N2-(2-(thiophen-3-yl)ethyl)oxalamide (CAS 1060307-17-6)
- (3-Imidazo[2,1-b][1,3]thiazol-6-ylphenyl)amine (CAS 861206-26-0)
- 2-(2-Chloro-5-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2223052-80-8)
- 2-(Sec-butyl)cyclopentan-1-ol (CAS 56470-82-7)
- Tert-Butyl 5-Methyl-3-Oxo-1,4-Diazepane-1-Carboxylate (CAS 179686-61-4)
- 3-(Aminomethyl)-7-(3-hydroxypropoxy)benzo[c][1,2]oxaborol-1(3H)-ol (CAS 1093643-33-4)
- 4-{[4-(hydroxymethyl)piperidin-1-yl]carbonyl}-1-methyl-1,2-dihydropyridin-2-one (CAS 1179886-87-3)
- 6-Bromo-3-chloroquinoxalin-2-amine (CAS 1083181-47-8)
- Benzyl 2-oxo-1,8-diazaspiro[4.5]decane-8-carboxylate (CAS 1936715-84-2)
- Angiotensin II Antipeptide (CAS 121379-63-3)
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