Carnegine, also known as pectenine, DMMM-4, or 6,7-dimethoxy-1,2-dimethyl-1,2,3,4-tetrahydroisoquinoline, is a tetrahydroisoquinoline and cyclized phenethylamine alkaloid found in the cacti species Carnegiea gigantea and Pachycereus pringlei.
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