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  Indian J Med Microbiol
 

Figure 1: The Mass spectrum (multiple reaction monitoring scan) of veratric acid standard. The veratric acid showed a [M + H]+ peak at m/z 182.8. The corresponding MS2 product (fragment) ions of veratric acid is m/z 139.20, 124.20 and 77.0

Figure 1: The Mass spectrum (multiple reaction monitoring scan) of veratric acid standard. The veratric acid showed a [M + H]<sup>+</sup> peak at m/z 182.8. The corresponding MS<sup>2</sup> product (fragment) ions of veratric acid is m/z 139.20, 124.20 and 77.0