Esmolol Impurity 13

ChEBI: (S)-esmolol is a methyl 3-{4-[2-hydroxy-3-(propan-2-ylamino)propoxy]phenyl}propanoate that has S configuration. The drug esmolol is a racemate comprising equimolar amounts of (R)- and (S)-esmolol. While the S enantiomer possesses all of the heart rate control, both the R and the S enantiomer contribute to lowering blood pressure. It is an enantiomer of a (R)-esmolol.