Fructose is a complex subject and Carb Nite needs a lot more detail about how to properly structure meals on refeeds including fat intake and timing and fructose. First, let me say, there's nothing wrong with CORN SYRUP which is mostly glucose polymers. It's HIGH FRUCTOSE CORN SYRUP that's at issue as well as table sugar and, even more importantly agave nectar.
One reason to avoid fructose on Carb Nites is that fructose has this horrible ability to be converted directly to fat in the liver (de novo lipogenesis) when an organism is in an energy surplus. But what tells your body if you're in an energy surplus? Weekly caloric load, T3 levels and most importantly in the case of fructose, liver glycogen levels.
That means that on Carb Nite, the short answer is: for non-liquid products, go ahead and eat whatever you want, fructose content be damned (unless it's pure agave nectar or it's sweetened with crystalline fructose). Your liver should be glycogen depleted (as well as your muscles) and the preferred path for fructose metabolism won't be to fat. You'll still get an insulin spike from the glucose component (both table sugar and HFCS are 50% glucose) and the fructose will only speed up glycogenesis in the liver.
For beverages, they tend to not stimulate a satiating response (as someone pointed out above) because fructose doesn't trigger a decline in ghrelin levels, so sodas and fruit juices could cause over-eating.
While most humans should avoid fructose as much as possible, as DH athletes (which everyone here is--an athlete in the sense of performing better at life) you don't need to worry on Carb Nite. (Carb Back Loading is a whole different story).