Myrosinase
Myrosinase is an enzyme. Myrosinase is the key to unlocking the health benefits of cruciferous veggies like broccoli, because it converts glucosinolates (like glucoraphanin) into sulforaphane.
Without myrosinase, your broccoli etc, won’t be converted into sulforaphane. Be cautious when buying sulforaphane supplements – if they don’t contain myrosinase too, they won’t have much of an effect.