7-AB
7-AB, also known as 7-amino-6,7,8,9-tetrahydro-5H-benzocycloheptene, is a conformationally restricted analogue of amphetamine related to 2-aminoindane and 2-aminotetralin. Unlike amphetamine, 2-AI, and 2-AT, 7-AB did not produce stimulant-type effects in animals. Instead, it caused behavioral disruption and death at higher doses. 6-AB is a positional isomer of 7-AB.