Purines are a class of organic compounds that play a crucial role in the building blocks of life. They are heterocyclic aromatic compounds consisting of a pyrimidine ring fused to an imidazole ring.

Nature - Rapid Column Chromatography of Purine and Pyrimidine Bases on ‘Ectaola’ Cellulose at Room Temperature and Elevated Pressure Skip to main content Thank you for visiting nature.com.