selectivity of cis ( - ) -2,3-dihydro-3- ( 4-methylpiperazinylmethyl ) -2-phenyl-1,5-b enzothiazepin-4 ( 5h ) -one monohydrochloride ( btm-1086 ) and its butylbromide ( btm-1073 ) to subtypes of muscarinic receptor , m1-and m2-receptors were tested , using pirenzepine , a m1-selective antagonist and atropine , a nonselective antagonist as reference drugs .
C0034826
muscarinic receptor
C0384752
m2-receptors