most non-steroidal anti-inflammatory drugs are competitive inhibitors ( e.g . ki for indomethacin , 0.20 microm for 9,10-phenanthrenequinone reduction at ph 6.0 , and 0.835 microm for androsterone oxidation at ph 7.0 ) , except for salicylates , which act non-competitively ( e.g . ki for aspirin , 650 microm for androsterone oxidation ) .
C0036077
salicylates
C0004057
aspirin