Possible Clues:

• Organic compound
• Organic compound with toxic or medicinal property
• All I do with a potassium compound is this
• Organic compound; a kilo lad (anagram)
• Take a look into a large juvenile compound
• Any of a group of nitrogenous basic compounds found in plants
• All oak? I'd planned organic compound
• A nitrogenous basic compound found in plants, such as morphine or nicotine
• Chemical compound produced from aluminium and potassium mixed with other metals we hear
• Organic compound having physiological action