Halenaquinol sulfate

Formula :
CAS : 96623-01-07 

Isolated from the sponge Xestospongia sapra; inhibits secretion of hatching enzyme of starfish; prevents cell membrane fusion events.

Halfenprox

Formula : C24-H23-Br-F2-O3
CAS : 111872-58-3 

An insecticide and acaricide.

Halichomycin

Formula :
CAS : 157078-49-4 

Isolated from Streptomyces hygroscopicus.

Halichondrin B

Formula : C60-H86-O19
CAS : 103614-76-2 

From marine sponge Halichondria okadai; binds in the Vinca domain of tubulin.