I have a large list of EC-numbers. I want to find out the reactions associated with them. I could not find the way to retrieve all together from Biosyc.
One of the bests pages with informacition of the EC number, reactions, kinetics parmeters and others are disponible in BRENDA. Here is the link, i hope that allow you to response your question.
You can also see in the Expasy Enzyme database. After write enzyme EC number you get a simples info about Enzyme for example catalysed reaction, accepted name or links to the enzyme databases where You can find out more about the enzyme.