Methyl 4-((1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)benzoate CAS 455321-49-0
| CAS No. | 455321-49-0 |
| Molecular Formula | C18H12O4 |
| Molecular Weight | 292.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methyl 4-((1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)benzoate is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methyl 4-((1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)benzoate (CAS 455321-49-0) is a high-purity analytical reference standard with the molecular formula C18H12O4 and a molecular weight of 292.29 g/mol.
Structurally, Methyl 4-((1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)benzoate (C18H12O4) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 292.29 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), Methyl 4-((1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)methyl)benzoate 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 | C18H12O4 |
| Molecular Weight | 292.29 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Methyl Standards
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Recommended Standards
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- Methyl 2-((1-(4-methoxyphenyl)-2,5-dioxopyrrolidin-3-yl)amino)acetate (CAS 471917-79-0)
- Methyl 5-oxo-5,11-dihydroisoindolo[2,1-a]quinazoline-2-carboxylate (CAS 327106-16-1)
- 7-Methoxy-2-methyl-4-nitrobenzofuran (CAS 89228-70-6)
- 1-Ethyl-5-nitro-1H-indazole (CAS 5228-51-3)
- (S)-morpholine-3-carbonitrile (CAS 1903775-78-9)
- Ethyl 1,4,5-trimethyl-1H-pyrrole-2-carboxylate (CAS 37670-51-2)
- 6,7,12b,13-Tetrahydro-4H-[1,3]dioxolo[4',5':7,8]isoquinolino[3,2-a][1,3]dioxolo[4,5-g]isoquinoline hydrochloride (CAS 96087-21-7)
- 3’-Bromo-4’-(1-pyrazolyl)acetophenone (CAS 1186663-58-0)
- 2,4-Dibromo-5-fluoro-3-nitropyridine (CAS 884494-91-1)
- 3,4-Dimethylhexan-1-amine (CAS 1251386-64-7)
- 3-{[(3-chlorophenyl)methyl]sulfanyl}-4H-1lambda6,4-benzothiazine-1,1-dione (CAS 477868-91-0)
- Semaglutide impurity 42 (CAS CATO-C4X-222642)
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