Interpretation of IR spectra of the compound having R
= 0.82. Frequency range and probable functional groups of the compound (R
f = 0.818): 3,422.22 cm-1, H bonded OH stress (B); 2,924.44 cm-1, CH (S) stretch; 1,653.91 cm-1, asymmetrical stretch of NO2 compounds (S); 1,636.16 cm-1, NH (M) bond; 1,461.64 cm-1, scissoring and bending of C-H compounds (V); 1,381.77 cm-1, doublet isopropyl (M-W); 1,130.34, 1,074.14, 1,053.43 cm-1, CO group (S) stretch; 920.32 cm-1, alkenes (S) bend; 816.79, 781.29 cm-1, CH phenyl ring (S) substitution bend; 636.35 cm-1, alkynes bend (B). V, variable; M, medium; S, strong; Br, broad; W, weak.