Allopurinol
Allopurinol is xanthine oxidase inhibitor used in treating gout. Chemically, it is 4-hydroxy-pyrazolo 3, 4 d-pyrimidine. It is an analogue of hypoxanthine. It was approved […]
purine
Azathioprine
Azathioprine is imidazolyl derivative of 6-mercaptopurine and is a purine antimetabolite. It was first agent to be used in organ transplantation. However, discovery of ciclosporin […]