SCHERING CORPORATION; MENG, Zhaoyang; REDDY, Panduranga Adulla, P.; SIDDIQUI, M. Arshad; MANDAL, Amit, K.; LIU, Duan; ZHAO, Lianyun; MCRINER, Andrew Patent: WO2012/27234 A1, 2012 ; Location in patent: Page/Page column 40 ; WO 2012/027234 A1