I'm going to hazard a guess and say no, probably not but you may wish to contact the vendor or speak with a lawyer that deals in such matters.
Have a look at the licence agreement that came with the trial application, and see if it limits you in that respect.
If you go ahead with it, be aware that if the vendor becomes aware that you are developing commercial software with a trial package, they may decide to take legal action (or they may not, depending on their stance) - the results of which I would not like to speculate on.