abstract |
Case 100-4362 n4-(9,10-Dihydro-4H-Benzo[4,5]Cyclcohepta[1,2-b]Thiophen-4-Ylidene)Piperidine Compounds Abstract of the Disclosure This invention provides new compounds of formula I, (I) wherein R1 is hydrogen or alkyl, and R2 is alkyl, useful as analgesics. |