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. 2008 Apr 3;8:10. doi: 10.1186/1472-6882-8-10

Figure 2.

Figure 2

Interpretation of IR spectra of the compound having Rf = 0.82. Frequency range and probable functional groups of the compound (Rf = 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.