It depends how you define an "intermediate." "A reactive intermediate" has a very short life time, its concentration is very low.Commonly. it's difficult to identify it. "An intermediate product" might be rather stable, you can isolate it and synthesize. How do you define " inter conversion?" Do you mean an intramolecular reaction?
Depending on the reaction rate you can lower the temperature to capture the intermediate and fraction collect it. You need to know the reaction mechanism to avoid conditions that might lead to decomposition. An other alternative is to make the synthesis if you know the structure, again, controlling the temperature.
This question is very general. The general answer is yes, there are plenty of options. No answer is possible without knowing the details. From this point of view are correct (inspirational) both Yurii and rand Andrei replies.