Characterization of the glucuronide conjugate of cotinine: a previously unidentified major metabolite of nicotine in smokers' urine.
Caldwell WS, Greene JM, Byrd GD, Chang KM, Uhrig MS, deBethizy JD, Crooks PA, Bhatti BS, Riggs RM. Characterization of the glucuronide conjugate of cotinine: a previously unidentified major metabolite of nicotine in smokers' urine. Chem Res Toxicol. 1992 Mar-Apr; 5(2):280-5.