3IOK:
reference: 2-Aminopyrazolo[1,5-a]pyrimidines as potent and selective inhibitors of JAK2., Ledeboer MW, Pierce AC, Duffy JP, Gao H, Messersmith D, Salituro FG, Nanthakumar S, Come J, Zuccola HJ, Swenson L, Shlyakter D, Mahajan S, Hoock T, Fan B, Tsai WJ, Kolaczkowski E, Carrier S, Hogan JK, Zessis R, Pazhanisamy S, Bennani YL, Bioorg Med Chem Lett. 2009 Dec 1;19(23):6529-33. Epub 2009 Oct 24. PMID: 19857967

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).