4,4'-Carbonylbis(2-(ethoxycarbonyl)benzoic acid) CAS 51986-91-5
| CAS No. | 51986-91-5 |
| Molecular Formula | C21H18O9 |
| Molecular Weight | 414.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4,4'-Carbonylbis(2-(ethoxycarbonyl)benzoic acid) 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.
4,4'-Carbonylbis(2-(ethoxycarbonyl)benzoic acid) (CAS 51986-91-5), molecular formula C21H18O9 and molecular weight 414.36 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,4'-Carbonylbis(2-(ethoxycarbonyl)benzoic acid) (C21H18O9) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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), 4,4'-Carbonylbis(2-(ethoxycarbonyl)benzoic acid) 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 | C21H18O9 |
| Molecular Weight | 414.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1971 |
Related Carbonylbis Standards
- 3,3'-Carbonylbis(7-methoxy-2H-chromen-2-one) (CAS 64267-17-0)
- 3,3'-Carbonylbis(7-diethylaminocoumarin) (CAS 63226-13-1)
- Carbonylbis(4,1-phenylene) diacetate (CAS 6290-82-0)
- 6,6'-(Carbonylbis(azanediyl))bis(4-hydroxynaphthalene-2-sulfonic acid) (CAS 6266-54-2)
- 4,4'-Carbonylbis(isobenzofuran-1,3-dione) (CAS 13972-93-5)
- 5,5'-Carbonylbis(1H-indene-1,3(2H)-dione) (CAS 2766727-86-8)
- 4,4'-(Carbonylbis(azanediyl))dibenzoicacid (CAS 1234-27-1)
- ((Carbonylbis(azanediyl))bis(3,1-phenylene))diboronic acid (CAS 957060-87-6)
Recommended Standards
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