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Table 1 Wave number and the corresponding possible functional groups present in the extract

From: Efficacy of Andrographis paniculata against extended spectrum β-lactamase (ESBL) producing E. coli

S No Wavenumber (cm− 1) Functional groups
1 413.656 Bromide. Iodide
2 607.467 Chloroalkanes
3 1037.52 Amines
4 1241.93 Alkyl Halide
5 1373.07 Alkane
6 1447.31 Alkane or Organophosphorus
7 1734.66 Carbonyl
8 2860.88 Aldehyde
9 2927.41 Alkanes and Alkyls