Tanning agents, vegetable Bilder
Zum Fachartikel Tanning agents, vegetable
Structural formula of gallic acid.

Structural formula of digallus acid.

Structural formula of epigallocatechin gallate.

Structural formula from Catechin.
Structural formula of gallic acid.
Structural formula of digallus acid.
Structural formula of epigallocatechin gallate.
Structural formula from Catechin.