Ans: One thing about pyrimidine and the derivatives of this compound is that there is an abundance of them in nature. The beneficial properties of pyrimidine include the production of amino acids and proteins which in turn help in providing immunity to the organisms that have high levels of pyrimidine. One of the pyrimidine examples includes the neurotoxin known as tetrodotoxin. The presence of this derivative in the pufferfish and other organisms ensures that they are protected from predators because this toxin can cause paralysis. This is one of the main reasons why most pharmaceuticals tend to carefully synthesize this chemical compound in order to create certain medications that prove to be useful in treating high blood pressure, malaria, epilepsy, etc.