Patent ID: 8530659

Claim:
A pharmaceutical composition for treatment of cancer comprising a cyclometalated N-heterocyclic carbene complex having the formula I: or a pharmaceutically acceptable salt thereof, wherein, either: M is Au 3+ ; X is a carbon atom; R 1 , R 2 , R 3 , R 4 , and R 5 are each —H; R 6 is R 7 is A is a OSO 2 CF 3 anion; n is +1; b is −1; and y is 1; or M is Au 3+ ; X is a carbon atom; R 1 is each pair of R 2 and R 3 , and R 4 and R 5 is joined together to form R 6 and R 7 are each —CH 3 ; A is a OSO 2 CF 3 anion; n is +1; b is −1; and y is 1.