although the pd2 values for pindolol ( 8.4-9.2 ) and ( - ) -isoprenaline ( iso , 8.4-8.7 ) fell within the same range in these preparations , the maximum responses to pindolol were less than 15 % of those to the catecholamine .
C0022245
isoprenaline
C0007412
catecholamine