2-(4-(Dimethylamino)benzylidene)-1h-indene-1,3(2h)-dione CAS 21889-13-4
| CAS No. | 21889-13-4 |
| Molecular Formula | C18H15NO2 |
| Molecular Weight | 277.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(4-(Dimethylamino)benzylidene)-1h-indene-1,3(2h)-dione (CAS 21889-13-4), a certified reference material (molecular formula C18H15NO2, MW 277.32 g/mol) for analytical method development and quality control.
2-(4-(Dimethylamino)benzylidene)-1h-indene-1,3(2h)-dione (C18H15NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C18H15NO2 |
| Molecular Weight | 277.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Dimethylamino Standards
- [4-(Dimethylamino)-1-piperidinyl](4-nitrophenyl)-Methanone (CAS 1007869-81-9)
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- 4-(4-(Dimethylamino)piperidin-1-yl)-3-nitrobenzaldehyde 1154666-51-9 (CAS 1154666-51-9)
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Recommended Standards
- 2-(3-Methylphenyl)quinoline-4-carbohydrazide (CAS 438228-84-3)
- 2-(4-Carbamimidoylphenyl)-1H-indole-5-carboximidamide (CAS 66639-01-8)
- 2-(3-Methylchromeno[4,3-c]pyrazol-1(4H)-yl)aniline (CAS 654650-99-4)
- 2-(4-Carbamimidoylphenyl)-1H-indole-6-carboximidamide (CAS 47165-04-8)
- 2-(4-Isobutoxy-2-methylphenyl)ethan-1-ol (CAS 1443345-52-5)
- 4-[4-(2,5-dimethylbenzenesulfonyl)piperazin-1-yl]-4-oxobutanoic acid (CAS 565198-65-4)
- 4-(2-Fluoropropan-2-yl)pyrimidine-5-carbaldehyde (CAS 1427195-14-9)
- RKI-1313 (CAS 1342276-76-9)
- Clobazam EP Impurity A (CAS 22316-55-8)
- Ethyl 3-carbamoyl-5-methylpyrazolo[1,5-a]pyrimidine-7-carboxylate (CAS 1193390-19-0)
- Ethyl 1-ethyl-2,3-dioxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylate (CAS 877041-27-5)
- Methyl 5-bromo-3-iodothiophene-2-carboxylate (CAS 1389313-67-0)
- Methyl 3-methoxy-2-(methylamino)benzoate (CAS 483-64-7)
- 81988-89-8 UH11FDQ454 Ramoplanin A(sub 3) Ramoplanin A3 (S)-2-(3-Chloro-4-hydroxyphenyl)-N-(N(sup 2)-((2Z,4Z)-8-methyl-2,4-nonadienoyl)-(S)-asparaginyl-(2S,3S)-3-hydroxyasparaginyl-(R)-2-(p-hydroxyphenyl)glycyl-(R)-ornithyl-(2R,3R)-allothreonyl-2-(p-hydroxyphenyl)glycyl-2-(p-hydroxyphenyl)glycyl-(2S,3S)-allothreonyl-(S)-phenylalanyl-(R)-ornithyl-(S)-2-(p-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycyl-(2R,3R)-allothreonyl-(S)-2-(p-hydroxyphenyl)glycylglycyl-(S)-leucyl-(R)-alanyl)glycine psi1-lactone Ramoplanin A 1 (peptide moiety), 1-(N(sup 2)-methyl-1-oxo-2,4-nonadienyl)-L-asparagine)-11-(L-2-(4-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycine)-, (Z,Z)- UNII-UH11FDQ454 (CAS 81988-89-8)
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