(S)-3-(3-(((3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl)methyl)(methyl-d3)amino)propyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one,3-[3-[[(7S)-3,4-dimethoxy-7-bicyclo[4.2.0]octa-1,3,5-trienyl]methyl- (trideuteriomethyl)amino]propyl]-7,8-dimethoxy-2,5-dihydro-1H-3-benzazepin-4-one,"Labeled Ivabradine, intended for use as an internal standard for the quantification of Ivabradine by GC- or LC-mass spectrometry.",Ivabradine Stable Isotopes