THEAFLAVINE-3,3'-DIGALLATE

Empirical Formula: C₄₃H₃₂O₂0
Molecular Weight: 868.7022
Nominal Mass: 868 Da
Average Mass: 868.7022 Da
Monoisotopic Mass: 868.148693 Da 
Index of Refraction: 1.908
Molar Refractivity: 205.76 cm³
Molar Volume: 439.5 cm³
Surface Tension: 162.3 dyne/cm
Density: 1.97 g/cm³
Flash Point: 401.7 °C
Enthalpy of Vaporization: 208.04 kJ/mol
Boiling Point: 1320.5 °C at 760 mmHg
Structure of Theaflavin digallate (CAS NO.33377-72-9):
                      
IUPAC Name: [1-[(2R,3R)-3,5-Dihydroxy-7-(3,4,5-trihydroxybenzoyl)oxy-3,4-dihydro-2H-chromen-2-yl]-3,5-dihydroxy-6-oxo-8-[(3R)-3,5,7-trihydroxy-3,4-dihydro-2H-chromen-2-yl]benzo[7]annulen-4-yl] 3,4,5-trihydroxybenzoate
Canonical SMILES: C1C(C(OC2=CC(=CC(=C21)O)O)C3=CC(=O)C(=C4C(=C3)C(=CC(=C4OC(=O)C5=CC(=C(C(=C5)O)O)O)O)C6C(CC7=C(C=C(C=C7O6)OC(=O)C8=CC(=C(C(=C8)O)O)O)O)O)O)O
Isomeric SMILES: C1[C@H]([C@H](OC2=CC(=CC(=C21)O)OC(=O)C3=CC(=C(C(=C3)O)O)O)C4=CC(=C(C5=C(C(=O)C=C(C=C45)C6[C@@H](CC7=C(C=C(C=C7O6)O)O)O)O)OC(=O)C8=CC(=C(C(=C8)O)O)O)O)O
InChI: InChI=1S/C43H32O20/c44-17-7-23(45)21-12-30(52)39(61-33(21)8-17)14-1-19-20(11-32(54)41(35(19)38(57)29(51)2-14)63-43(59)16-5-27(49)37(56)28(50)6-16)40-31(53)13-22-24(46)9-18(10-34(22)62-40)60-42(58)15-3-25(47)36(55)26(48)4-15/h1-11,30-31,39-40,44-50,52-56H,12-13H2,(H,51,57)/t30-,31-,39?,40-/m1/s1
InChIKey: TUJOKWPTOVJHLY-JBJHRQGLSA-N
Product Category of Theaflavin digallate (CAS NO.33377-72-9): Prophylactic agent against pertussis infection

 Theaflavin digallate , its cas register number is 33377-72-9. It also can be called Teaflavin digallate ; Benzoic acid, 3,4,5-trimethoxy-, diester with 1,8-bis(3,4-dihydro-3,5,7-trihydroxy-2H-1-benzopyran-2-yl)-3,4,6-trihydroxy-5H-benzocyclohepten-5-one ; and 1,8-Bis(3,4-dihydro-3,5,7-trihydroxy-2H-1-benzopyran-2-yl)-3,4,6-trihydroxy-5H-benzocyclohepten-5-one digallate . Theaflavin digallate (CAS NO.33377-72-9) is a antioxidantpolyphenol found in black tea, and a theaflavin derivative; and it  is a potent scavenger of superoxide, even more so than EGCG.