Figure -4.5.31: Mass spectrum for compound SL. no-31, peak no-36
Figure -4.5.32: Mass spectrum for compound SL. no-32, peak no-37
Figure -4.5.33: Mass spectrum for compound SL. no-33, peak no-38
Figure -4.5.34: Mass spectrum for compound SL. no-34, peak no-39
Figure -4.5.35: Mass spectrum for compound SL. no-35, peak no-40
Figure -4.5.36: Mass spectrum for compound SL. no-36, peak no-41