Theaflavine-3,3'-Digallate(Tfbg) CAS 33377-72-9
| CAS No. | 33377-72-9 |
| Molecular Formula | C43H32O20 |
| Molecular Weight | 868.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Theaflavine-3,3'-Digallate(Tfbg) (CAS 33377-72-9), molecular formula C43H32O20 and molecular weight 868.70 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Theaflavine-3,3'-Digallate(Tfbg) (C43H32O20) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Theaflavine-3,3'-Digallate(Tfbg) 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 | C43H32O20 |
| Molecular Weight | 868.70 g/mol |
| Purity | >95% |
| 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) | 28.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Recommended Standards
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- Pemetrexed EP Impurity B (CAS 1802552-04-0)
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- Pemetrexed EP Impurity C (CAS 1802552-16-4)
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Why CATO?
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