Benzylisoquinoline alkaloids

Benzylisoquinoline, building block of benzylisoquinoline alkaloids
Fruit of Annona reticulata
Flower and fruit of the opium poppy

The benzylisoquinoline alkaloids are natural products that can be classified as isoquinoline alkaloids and are derived from benzylisoquinoline. They also include the benzyl(tetrahydro)isoquinoline alkaloids.