(1R)-1,5-Dihydroxy Canagliflozin is an impurity of Canagliflozin (C175190); a sodium/glucose cotransporter 2 (SGLT2) inhibitor. Canagliflozin has been shown to dose dependently reduce calculated renal threshold for glucose excretion and increase urinary glucose excretion. Canagliflozin is a candidate for the treatment of type 2 diabetes and obesity.