Isonicotine :: Isonicotine (n.) A crystalline, nitrogenous base, C10H14N2, isomeric with nicotine..
Isonicotinic :: Isonicotinic (a.) Pertaining to, or derived from, isonicotine..
Isonicotinic :: Isonicotinic (a.) Pertaining to, or designating, an acid isomeric with nicotinic acid..