Corporate history
| November 1964 | “Ohara Pharmaceutical Co., Ltd.” was established. |
| August 2001 | Strategic capital alliance signed with Itochu Chemical Frontier Corporation, Inabata & Co., Ltd. and CBC Co., Ltd. |
| February 2007 | Obtained all stocks for Sankyo Yell Pharmaceutical Co., Ltd. From Sankyo Co., Ltd., jointly with the group companies |
| October 2007 | Tokyo Head Office was established at St. Luke’s Tower |
| June 2008 | Transferred head office functions to Shiga Research Park Introduction of resources from Toho Pharmaceutical Co., Ltd. |
| February 2014 | Capital:1,369,950,000yen |
| December 2015 | Antineoplastic Enzyme Preparation “Crisantaspase” Submission of a Japan New Drug Application for the Treatment of Diseases including Acute Lymphoblastic Leukemia and Malignant Lymphoma. |