I broke this out into a separate thread to increase the likelihood of a quality answer. Are you asking about this in the context of a ReportBuilder template or a Python based report template?
I'm working in Report Builder. I saw that I had this in a python based report template and wanted to have the same functionality on a Report Builder Template.
Having the hypertext in a PDF go to a web based asset is slick, and some clients will appreciate the extra touch, besides, we noticed here in the lab and want that functionality on every PDF that has a CAS number, and I'm think of other applications and how neat this is.