Possible Clues:

• Drug sold as Marinol [Subscribe to weekly indie xwords at avxwords.com]
• Chemical featured at some modern dispensaries
• Baker's ingredient?
• April 20th substance, and a hint to this puzzle's theme
• High-minded stuff?
• Cannabinoid agonist responsible for many a vapid philosophical discussion
• Strong weed has a lot of it: Abbr.
• Joint component: Abbr.
• Marijuana ingredient
• Cannabinoid letters