Upright rows are a horrible exercise. You have about a 1 in 3 chance of having a subacromial space so cramped that you have a very high chance of creating issues by doing loaded exercises in a position that minimizes this space.
Let's clarify what a compound and isolation exercise is first. Technically speaking, a compound movement involves multiple joint articulations. Therefore, it is technically a compound movement. However, as far as the amount of muscle mass worked, it isn't in the same league with most vertical pull exercises. Don't get too caught up in these classifications. The idea is that compound movement are good because you stimulate large amount of muscle mass at once. A stiff-legged deadlift is hardly a compound movement by definition, but it works a shit ton more muscle mass than a bicep curl.
As well, this is not technically a pulling movement either. It is a kind of hybrid. A pulling movement is an exercise where the load is being moved toward your center of mass. This exercise you do that for a small portion of the range of motion, but then the weight is moving away from the center of mass.
Moral of the story is do your pullups/chinups, don't shy away from pulldown variations, and upright rows are garbage.