Alykation of 5-ethylbarbituric acid

I want to introduce a pentyl group to 5-ethylbarbituric acid.

I would like the sodium salt.

Could I deprotonate with NaOH in DMF and add 1-bromopentane to introduce the pentyl group at the 5 position? So I have both a pentyl group and ethyl group at the 5 position?

Thanks in advance, and apologies for any misunderstandings, I'm still learning.