| abstract |
Formula I, which combines β 2 and β 3 -adrenergic receptor stimulation and is useful as a pain reliever and accelerator for urolithiasisn n n Formula In n n n n n n n (Wherein R 1 is a hydrogen atom, a lower alkyl group or an aralkyl group, R 2 is a hydrogen atom or a halogen atom, a carbon atom with (R) is a carbon atom of the (R) arrangement, and a carbon atom with (S) is ( Novel aminoethyl phenoxy acetic acid derivatives and their pharmacologically acceptable salts. |