For some ailments the treatment of choice is medicinal marijuana. But its active ingredient, tetrahydrocannabinol (THC), is hard to make.
Many researchers have made the psychoactive substance, but their brews were often contaminated with chemicals that are slightly different from THC and don't have the same properties. Barry Trost and Kalindi Dogra at Stanford University were able to avoid that problem and other pitfalls in building the chemical
by using a molybdenum catalyst. They eventually produced the substance successfully.
Their research, funded by Merck and the National Institutes of Health, demonstrated the effectiveness of their catalyst, but growing marijuana is still by far the most-efficient way to produce THC!!!