SL No. Peak value (cm-1) Stretching Inference 1 3642.1 O-H stretching Alcohols/Phenols 2 2965.4 C-H stretching Alkanes 3 2928.5 C-H stretching Alkanes 4 1665.2 C=O stretching C-O NH 5 1600.8 C=C stretching Alkenes 6 1554.8 C=C stretching of aromatic ring Aromatic Compounds 7 1360 S=O, sym Sulphoxide 8 1080 C-O Ethers 9 1076.9 C-O Ethers 10 779.64 C-H stretching Aromatics

Structure activity relationship of the different functional groups present in the bioactive compound extracted by 80% ethanol from leaves of Vallisneriaspiralis L. by FT-IR Spectroscopy.

Table 2: FT-IR Peaks Interpretation.