Adenine (a base in the use of DNA)
Organic compound of the purine family, often called a base, consisting of two rings, each containing both nitrogen and carbon atoms, and an amino group.
It occurs free in tea and in combined form in nucleic acids, ATP, vitamin B12, and several coenzymes. In DNA its complementary base is thymine. It or its corresponding nucleoside or nucleotide may be prepared from nucleic acids by selective techniques of hydrolysis.
Source:Britannica encyclopedia
