ANY TESTING OF MEDICAL TREATMENTS IS AN EXERcise in comparison. In a typical clinical trial, 2 treatments are compared to determine which is better or if both are the same. Trials designed to address whether one treatment is better than the other may be called superiority trials, whereas those designed to show that 2 treatments are the same are called equivalence trials. However, the design of ...

THE STRUCTURE OF ABACAVIR (SYSTEMATIC NAME: {(1S,4R)-4-[2-amino-6-(cyclo-propyl-amino)-9H-purin-9-yl]cyclo-pent-2-en-1-yl}methanol), C(14)H(18)N(6)O·2.5CH(3)OH, consists of hydrogen-bonded ribbons which are further held together by additional hydrogen bonds involving the hydroxyl group and two N atoms on an adjacent purine. The asymmetric unit also contains 2.5 mol-ecules of methanol solvate wh...