- An indol acquired by the reduced total of isatin.
- A white, crystalline, nitrogenous substance gotten by the reduction of isatin. It is a part of this indol show; -- ergo its name.
- An indol gotten by the decrease in isatin.
- A white, crystalline, nitrogenous compound gotten because of the reduced amount of isatin. It's an associate associated with indol show; -- for this reason its name.