1 Aussies are known for their excellent herding ability, intelligence, and high energy â and theyâre also one of the larger dogs on this list. 2  Average lifespan: 15 years. 3  Shih Tzu. 4  These âlionsâ were sweethearts of the Chinese Ming Dynasty, and today they live long lives as companion animals throughout the world.
Methylamine is used to produce a variety of important chemical products: pharmaceuticals; pesticides; fuel additives; explosives; solvents and cleaning agents; photographic precessing chemicals; and chemicals for the tanning of leather and dye processes.
Amphetamine (contracted from alphaâmethylphenethylamine) is a potent central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity. Amphetamine was discovered in 1887 and exists as two enantiomers: levoamphetamine and dextroamphetamine.Amphetamine properly refers to a specific chemical, the racemic free base, which is equal parts of the two enantiomers, levoamphetamine and dextroamphetamine, in their pure amine forms.However, the term is frequently used informally to refer to any combination of the enantiomers, or to either of them alone.he side effects of amphetamine are varied, and the amount of amphetamine used is the primary factor in determining the likelihood and severity of side effects. Amphetamine products such as Adderall, Dexedrine, and their generic equivalents are currently approved by the USFDA for long-term therapeutic use.