(-)-Epigallocatechin 3-(4"-O-methyl)gallate CAS 224434-07-5
| CAS No. | 224434-07-5 |
| Molecular Formula | C23H20O11 |
| Molecular Weight | 472.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(-)-Epigallocatechin 3-(4"-O-methyl)gallate (CAS 224434-07-5), molecular formula C23H20O11 and molecular weight 472.40 g/mol, is a CATO reference standard with documented purity and traceability.
(-)-Epigallocatechin 3-(4"-O-methyl)gallate (C23H20O11) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
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 | C23H20O11 |
| Molecular Weight | 472.40 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2021 |
Related Epigallocatechin Standards
Recommended Standards
- ((2R,3R,4S,5R)-3-(Benzoyloxy)-4-fluoro-5-(5-fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl benzoate (CAS 952651-49-9)
- 4-(4-Bromophenyl)-3-((naphthalen-1-ylmethyl)thio)-5-phenyl-4H-1,2,4-triazole (CAS 763139-03-3)
- ((2S,3S,4R,5R)-3-(benzoyloxy)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2,4-difluorotetrahydrofuran-2-yl)methyl benzoate (CAS 1612841-23-2)
- Vilanterol Impurity 71 (CAS CATO-C4X-193571)
- 6-Bromo-3-hydroxypicolinonitrile (CAS 727737-00-0)
- 3-[(4-chlorophenyl)methyl]piperidine-2,6-dione (CAS 24866-79-3)
- 3,3,3-Trifluoro-1-(piperazin-1-yl)propan-1-one (CAS 926208-79-9)
- 2-[(3-Fluorobenzoyl)amino]-1,3-thiazole-4-carboxylic acid (CAS 941869-58-5)
- Azathioprine Impurity 15 (CAS 90947-51-6)
- 1-(2-(2-Aminoethyl)morpholino)ethan-1-one hydrochloride (CAS 2243162-52-7)
- [{2-[4-(Aminocarbonyl)piperidin-1-yl]-2-oxoethyl}(phenyl)amino]acetic acid (CAS 1142211-91-3)
- 1-Phenethylpyrrolidin-3-amine (CAS 320369-94-6)
- 4-Bromo-3-methyl-N-(2-(pyrrolidin-1-yl)ethyl)benzamide (CAS 214210-11-4)
- endo-Arg30-Semaglutide (CAS CATO-C4X-2226281)
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