I infused a rather large bud in just enough perfumers' alcohol to cover. When the alcohol turned green, I repeated with another bud and then a third. I dried out the used buds and used them successfully for other purposes so I surmise that the active ingredient perhaps isn't soluble in alcohol but the aroma ingredients (of the raw cannabis, not the smoke) are. The tincture is bright green and has the aroma of freshly cut cannabis.
Black Afgano by Nasomatto supposedly has cannabis in it. Some say they can detect it while others can't. Either way, the frag smells great.