Product name

Polyphenon

Sunphenon

70S

EGCg

BG-3

90S

Lot No.

1008271

207051

210041

207311

Catechins content(a)/wt%

(+)-Catechin

2.2

0.1

2.7

1.4

(−)-Epicatechin

7.5

0.6

7.9

4.5

(−)-Gallocatechin

6.6

-

4.6

2.3

(−)-Epigallocatechin

18.2

-

16.2

3.8

(−)-Catechin gallate

0.7

-

-

0.8

(−)-Epicatechin gallate

8.9

3.9

7.4

11.9

(−)-Gallocatechin gallate

4.1

0.3

2.7

7.5

(−)-Epigallocatechin gallate

32.0

92.1

51.2

46.8

Total catechin content(a)

80.2

96.8

92.6

78.9

Total polyphenol content(b)

/(c)

≈100

90.8

92.0