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IB 503

Known as: 3-(9,10-dihydro-4H-benzo(4,5)cyclohepta(1,2-b)thien-4-ylidene)-N,N-dimethyl-1-propanamine, 4-(3-dimethylaminopropyliden-1)-9,10-dihydro-4H-benzo(4,5)cyclohepta(1,2-b)thiophene, IB-503 
National Institutes of Health