- 3100-2760 cm\(^{-1}\) (multiple): This range can indicate C-H stretches, including aromatic C-H stretches (around 3100 cm\(^{-1}\)) and aliphatic C-H stretches (around 2900 cm\(^{-1}\)).
- 1650 cm\(^{-1}\): This is characteristic of a C=O stretch (carbonyl
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