Please give us the complete sentence in which you would use the word. What do you mean by "rectified product?" Also, have you checked a dictionary? That's usually the best starting point when you're trying to find out whether or not a word exists.
Sivov - 2006 - Technology & Engineering
Ethanol (rectificate) was boiled for eight hours over fresh burnt calcium oxide (200g of CaO per 11 of ethanol). Then the mixture of 5g of magnesium shaving, .//
There's a wiki entry. So probably 'rectificate'(n) is the same as 'rectified spirit'.