Long-acting contraceptive agents: Norethisterone esters of arylcarboxylic acids

~%

~%

~%

~56%

~%

~82%

~%

~%

~%

~%

~%

~%

~%

~67%

~%

~%

~%

~%

~%

~%

~%

~%

~%

~%

~%

~%

~%

~86%