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Berberine is an isoqinoline alkaloid shown to have a chemopreventive property against colon tumor formation by inhibiting the enzyme Cox-2 (cyclooxygenase-2) which is abundantly expressed in colon cancer cells.
B 1700 (OTTO) Berberine chloride, 97% Cas 633-65-8 - used in histology for staining heparin in mast cells.