Lesinurad mechanism of action is:
Xanthine oxidase inhibitor
Uric acid synthase inhibitor
Uric acid carboxylase inhibitor
Ans.B. Lesinurad is a URAT1(uric acid transporter 1) inhibitor, thus it increases the urinary excretion of uric acid.
It is used in combination with a xanthine oxidase inhibitor for the treatment of hyperuricemia associated with gout.