Abstract: There is disclosed herein a process for relieving bronchial spasm and facilitating breathing in warm-blooded animals which comprises administering to a warm-blooded animal in need thereof an amount sufficient to relieve bronchial spasm and facilitate breathing in said warm-blooded animal of a prostanoic acid of the formula: ##STR1## wherein R is ethynyl, A is --CH.sub.2 --CH.sub.2 -- and B is --CH.sub.2 --CH.sub.2 --; R is ethynyl, A is --CH.sub.2 --CH.sub.2 --, and B is trans --CH=CH--; or R is ethynyl, A is cis --CH=CH--; and B is trans --CH=CH--; and R.sup.1 is hydrogen, alkyl of from 1 to about 6 carbon atoms, alkali metal, or a pharmacologically acceptable cation derived from ammonia or a basic amine.

Abstract: 9-Oxo-15-substituted prostanoic acids, and intermediates for their preparation and for the preparation of other known prostaglandins are disclosed. The final products have bronchodilatory activity.

Abstract: A syringe for injecting liquids into blood vessels of living bodies comprising a cylinder equipped at one end with an attachment flange and at the other end with a catheter connection. A piston insertable into the cylinder and having a sealing ring arranged in a groove. Between the sealing ring and the inner wall of the cylinder there is arranged a substantially L-shaped slide ring operatively connected with the piston. This slide ring sealing bears by means of a first leg at the inner wall of the cylinder and by means of a second leg in a channel or recess which is parallel to the aforesaid groove. A substantially cylindrical shoulder extending from the channel up to an inclined portion of the tip of the piston extends at least to the center or center line of the deformed sealing ring.

Abstract: 9-Oxo-15-Substituted prostanoic acids, and intermediates for their preparation and for the preparation of other known prostanglandins are disclosed. The final products have bronchodilatory activity.