| 2I3Z: reference: Xanthine mimetics as potent dipeptidyl peptidase IV inhibitors., Kurukulasuriya R, Rohde JJ, Szczepankiewicz BG, Basha F, Lai C, Jae HS, Winn M, Stewart KD, Longenecker KL, Lubben TW, Ballaron SJ, Sham HL, von Geldern TW, Bioorg Med Chem Lett. 2006 Dec 15;16(24):6226-30. Epub 2006 Sep 28. PMID: 17010607 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).