Ro 61-1448

Ro 61-144

Tolcapone 3--D-Glucuronide

Tolcapone 3-b-D-Glucuronide

2-Hydroxy-5-(4-methylbenzoyl)-3-nitrophenyl -D-Glucopyranosiduronic Acid

2-Hydroxy-5-(4-methylbenzoyl)-3-nitrophenyl b-D-Glucopyranosiduronic Acid