Below is the structure of Isoniazid, or Isonicotinic acid hydrazide. It finds use in treatments for tuberculosis. This compound, which incorporates a carbonyl functionality as part of the hydrazide (similar in structure to a secondary amide) and the nitrogenous heterocycle pyridine.
More info on Isoniazid can be found at these links:
Those curious should read about Haber in the book "From Stars to Stalagmites" by Paul Braterman, link to Amazon site here: http://www.amazon.com/From-Stars-To-Stalagmites-Everything/dp/9814324973
Clothianidin is a neonicotinoid. Neonicotinoids are a class of insecticides that are chemically similar to nicotine, which has been used as a pesticide since the late 1700s.