Five Salts of Berberine

Structures of berberine chloride tetrahydrate, C 20 H 18 NO 4 + Cl - .4H 2 O (I), berberine chloride ethanol solvate hemihydrate, C 20 H 18 NO 4 + .Cl - C 2 H 5 OH.0.5H 2 O (II), berberine bromide dihydrate, C 20 H 18 NO 4 + .Br - .2H 2 O (III), berberine iodide, C 20 H 18 NO 4 + .I - (IV) and bis(berberine) sulfate heptahydrate, 2C 20 H 18 NO 4 +.SO 4 2- .7H 2 O (V) are reported. In all the salts, the cations pack in antiparallel pairs.