paracetamol ( p ) and its four main metabolites , the sulphate ( s ) , glucuronide ( g ) , cysteine ( c ) and mercapturic acid ( m ) conjugates , are separated on ods/tms silica using a standard eluent , water-methanol-formic acid ( 86:14:0.1 , v/v/v ) , in the order s , g , p , c , m .
C0010654
cysteine
C0001047
mercapturic acid