PHARMARESOURCES (SHANGHAI) CO., LTD.; KAIYUAN HENGTAI PHARMA CO., LTD.; CHEN, Ping; LI, Yinqiang; PENG, Shaoping; JIANG, Shengli; CAI, Zhenwei; AN, Rongcang; WANG, Weihua; DONG, Xuejun Patent: WO2012/145932 A1, 2012 ; Location in patent: Page/Page column 28-29 ;