Soft anticholinergic esters of the formulas:
wherein R
1
and R
2
are both phenyl or one of R
1
and R
2
is phenyl and the other is cyclopentyl; R is C
1
-C
8
alkyl, straight or branched chain; and X
−
is an anion with a single negative charge; and wherein each asterisk marks a chiral center; said compound having the R, S or RS stereoisomeric configuration at each chiral center unless specified otherwise, or being a mixture thereof.