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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