Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are alkyl having one to 4 carbon atoms, allyl or ##STR2## is pyrrolidino, piperidino, perhydroazepino or morpholino, RX is an inorganic acid, organic acid or an alkyl bromide or iodide, m is 3 or 4, and n is zero or one. The compounds are prepared by (1) reacting benzothienyl-lithium with ##STR3## followed by hydrolysis, or (2) when the substituent is located at the 2 position of the benzothienyl group, by reacting benzothiophene with ##STR4## followed by reaction with ##STR5## The compounds possess blood-plaque aggregation, spasmolytic, analgesic, anti-inflammatory and coronary, cerebral and peripheral vaso-dilatory properties.