Chlorophyllin

Copper chlorophyllin A is a copper, sodium salt. It is used commonly as a food additive and it may have medicinal properties. Copper chlorophyllin is commonly used to refer to two compounds, trisodium copper chlorin e6 and disodium copper chlorin e4. Chlorophyll is a not water soluble; however, copper chlorophyllin has been shown to be water soluble.

Synthesis
During the synthesis of copper chlorophyllin, the magnesium found in the center of typical chlorophyll is replaced by copper and the phytol tail is lost.