Emil Fischer

German chemist (1852–1919)

Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water-soluble. Purine also gives its name to the wider class of molecules, purines, which include substituted purines and their tautomers. They are the most widely occurring nitrogen-containing heterocycles in nature.

projection formula in which vertically drawn bonds are considered to lie below the projection plane and horizontal bonds to lie above that plane

Phenylhydrazine is the chemical compound with the formula . It is often abbreviated as ''''''. It is also found in edible mushrooms.

Type of chemical reaction

thumb|right|200px|Ball-and-stick model of glucosazone

chemical reaction

chemical reaction

chemical reaction