Hamamelis virginiana tannins

The family Hamamelidaceae consists of 26 genera and about 100 species of shrubs or tress known to contain tannins and iridoids. The leaves are alternate, simple, and often palmately lobed. The flowers are small and appear in spikes. The fruits are woody, capsular, and scepticidal. In Western medicine, the dried leaves of Hamamelis virginiana (hamamelis, British Pharmaceutical Codex, 1963), yielding not less that 20% of alcohol (45%)-soluble extractive, have been used as astringents for the treatment of hemorrhoids. Hamamelis water (British Pharmaceutical Codex, 1969) made from the stems has been used as a cooling application to sprains and bruises and as a styptic remedy. It is also used in cosmetics and as active ingredient of eye lotions. 

Hydroxymethyl) -d -ribose (hama-melose) CH2OH H H HOH2 C—C—C—C—CHO HO HO HO tannins of Hamamelis virginiana<7 ... 

C20H20O14 484.37 Tannin from witch hazel Hamamelis virginiana. Also in Quercus rubra and Castanea sativa (sweet chestnut). Prisms or needles + IfeHjO (H2O). 

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