Table 1.

Band assignments of cancer cell lipids.^28,29

Peak number	Wavenumber (${\mathrm{cm}}^{-1}$)	Assignment
1	1064 to 1125	$\nu (\mathrm{C}─\mathrm{C})$ mode
2	1263	$\delta (═\mathrm{C}─\mathrm{H})$ in-plane cis
3	1294	$\delta ({\mathrm{CH}}_2)$ twisting
4	1440	$\delta ({\mathrm{CH}}_2)$ scissor
5	1455	$\delta ({\mathrm{CH}}_2)$
6	1655	$\nu (\mathrm{C}═\mathrm{C})$ cis double bond stretching mode
7	1710–1775	$\nu (\mathrm{C}═\mathrm{O})$ ester carbonyl stretching mode
8	2851	${\mathrm{CH}}_2$ symmetric stretching (lipids)
9	2873	${\mathrm{CH}}_3$ symmetric stretching (lipids, proteins)
10	2920–2930	${\mathrm{CH}}_2$ antisymmetric stretching (lipids)
11	2959	${\mathrm{CH}}_3$ antisymmetric stretching (lipids, proteins)
12	3015	Olefinic $═\mathrm{CH}$ stretching (unsaturated lipids, cholesterolesters)

Note: $\nu$ and $\delta$ indicate stretching and deformation vibrations, respectively.