Table 2 Absorption bands and corresponding vibrational modes in spectra.

From: Infrared spectral analysis of gastrointestinal neuroendocrine tumors reveals diagnostic biomarkers

Assignment

Bands

Vibrational mode

Lipids

3015 cm−1

C=C, Olephenic stretch

Lipids

2960 cm−1

(CH3 a.s.), Membrane lipids

Lipids

2929 cm−1

(CH2 a.s.), Membrane lipids

Protein

1650 cm−1

Amide I, Proteins

Nucleic Acids

1072 cm−1

phosphate stretching of nucleic acids

  1. This table lists the spectral absorption bands associated with specific vibrational modes, detailing the characteristic frequencies for lipids and proteins as observed in the study.
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