<span class="citations"><p>Giorgio Stramentinoli, Federico Gennari, "Process for preparing adenosine derivatives of anti-inflammatory and analgesic activity." U.S. Patent US4373097, issued October, 1965.</p>
</span><a href="https://www.google.com/?tbm=pts#q=4373097&amp;tbm=pts" rel="noopener" target="_blank">US4373097</a>