Anthocyanidins are common plant pigments. They are the sugar-free counterparts of anthocyanins based on the benzopyrylium (chromenylium) ion. They form a large group of polymethine dye. In particular anthocyanidins are salt derivatives of the 2-phenylchromenylium cation, also known as flavylium cation. As shown in the figure below, the phenyl group at the 2-position, can carry different substituents. The counterion of the flavylium cation is mostly chloride. With this positive charge, the anthocyanidins differ from other flavonoids.
Anthocyanidin can be extracted from Grape seed, Cranberry, Pine bark, Bilberry, and etc. In other words, Anthocyanidin is the active ingredient of Grape seed extract, Cranberry extract, Pine bark extract, and Bilberry extract and so on.

Price:
Ingredients : Other, Standardized Proanthocyanidin Extract
Grade : Pharmaceutical Grade
Purity(%) : 95% Proanthocyanidins
Formulations Type : Bulk powder or formulated
Form : Powder
Storage Instructions : Store in a cool, dry place, away from sunlight
Ingredients : Other, Theaflavin derived from Camellia sinensis (tea leaves)
Grade : Pharmaceutical Grade
Purity(%) : 98%
Formulations Type : Powdered Formulation
Form : Powder
Storage Instructions : Store in a cool, dry place; avoid direct sunlight.
Ingredients : Other, Salicin (Primary Active) from Willow Bark
Grade : Pharma Grade
Purity(%) : 98%
Formulations Type : Bulk raw material
Form : Powder
Storage Instructions : Store in cool, dry place; keep tightly sealed away from sunlight
Ingredients : Other, Pure Curcuma longa (Turmeric) Extract
Grade : Pharmaceutical Grade
Purity(%) : 95% (Curcuminoids) approx.
Formulations Type : Powder, Capsule, Tablet (on request)
Form : Powder
Storage Instructions : Store in a cool, dry and dark place, away from moisture and direct sunlight
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