Is entecavir butyrate the same as entecavir in Runzhong?

The main components of the medicine have the same therapeutic effect. Tintin is the prodrug of Runzhong, that is, entecavir maleate is absorbed into the body, and finally absorbed and transformed, and it also becomes entecavir. Maleic acid is mainly added to improve bioavailability and stability and reduce toxic and side effects. There is no difference in function between the two, but Tintin is superior to Runzhong because of its high bioavailability (that is, it absorbs more main components).