Active Pharmaceutical Ingredients

Tannic acid is a specific form of tannin, a type of polyphenol. Its weak acidity (pK_a around 10) is due to the numerous phenol groups in the structure. The chemical formula for commercial tannic acid is often given as C₇₆H₅₂O₄₆, which corresponds with decagalloyl glucose, but in fact it is a mixture of polygalloyl glucoses or polygalloyl quinic acid esters with the number of galloyl moieties per molecule ranging from 2 up to 12 depending on the plant source used to extract the tannic acid. Commercial tannic acid is usually extracted from any of the following plant parts: Tara pods (Caesalpinia spinosa), gallnuts from Rhus semialata or Quercus infectoria or Sicilian Sumac leaves (Rhus coriaria).

According to the definitions provided in external references such as international pharmacopoeia, Food Chemicals Codex and FAO-WHO tannic acid monograph only tannins sourced from the above-mentioned plants can be considered as tannic acid. Sometimes extracts from chestnut or oak wood are also described as tannic acid but this is an incorrect use of the term. It is a yellow to light brown amorphous powder; 2850 grams dissolves in one litre of water (1.7 moles per liter).

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3-(4-Chlorophenyl) Glutaric Acid offered is also known by names of (4-Chlorophenyl)glutaricacid; (p-Chlorophenyl)glutaric Acid; b-(p-Chlorophenyl) glutaric Acid and others.

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Biotin, also known as vitamin H or coenzyme R, is a water-soluble B-vitamin(vitamin B₇). It is composed of a ureido (tetrahydroimidizalone) ring fused with atetrahydrothiophene ring. A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring. Biotin is a coenzyme for carboxylase enzymes, involved in the synthesis of fatty acids, isoleucine, and valine, and in gluconeogenesis. The only human health condition for which there is strong evidence of biotin''s potential benefit as a treatment is biotin deficiency.