Zofenopril-D5,"(2S,4S)-1-((S)-3-(Benzoylthio)-2-methylpropanoyl)-4-((phenyl-d5)thio)pyrrolidine-2-carboxylic acid","Labeled Zofenopril, intended for use as an internal standard for the quantification of Zofenopril by GC- or LC-mass spectrometry.",Zofenopril Stable Isotopes