exhibit 10. 42 may 9, 2016 purchase agreement this purchase agreement ( this " agreement " ) is made as of may 9, 2016, and sets forth terms by elion oncology, llc ( the " purchaser " ) 4800 hampden lane, suite 200, bethesda, md 20814 will acquire from fennec pharmaceuticals inc., 68 tw alexander dr., triangle, nc 27709, ( the " company " ) all intellectual property and related property of the company pertaining to eniluracil and the compound known as adh - 1. 1. scope of the agreement 1. 1. the scope of this agreement shall be the sale and purchase of the intellectual property of the company as described in this purchase agreement, including any and all data, documentation, research, rights, benefits and available substances, active pharmaceutical ingredient ( api ), as well as any related kits relating to eniluracil and adh - 1 technologies or development programs thereunder and all other related pharmaceutical technologies of the company, whether owned, licensed or otherwise ( collectively, the “ technologies ” ), including without limitation the lead ( and back - up ) compounds products in clinical trials, preclinical and clinical phases ( collectively, the " products " ), data, trial master files, ind ’ s, safety databases on which the technologies and products have been researched and / or developed by the company, files, and discs relating to the foregoing containing information relating to eniluracil and adh - 1 ( all such technologies, products and other assets of the company collectively, the " purchased assets " ), whether in hard copy, electronic files, notebooks, or otherwise wherever they are stored, including : i. all patents, copyrights, trademarks, designs, including all related applications, and any other registered or unregistered intellectual or industrial property relating to the products and the technologies. i. all patents, copyrights, trademarks, designs, including all related applications, and any other registered or unregistered intellectual or industrial property relating to the products and the technologies. i. all patents, copyrights, trademarks, designs, including all related applications, and any other registered or unregistered intellectual or industrial property relating to the products and the technologies. ii. all information and know - how, including but not limited to information and know - how related to research, development, manufacturing and /