Fig. 1. Raman spectra of NADH with 532 and 785 nm laser excitation

Fig. 2. Molecular structure of NADH
The molecule is divided into three parts, i.e., adenine, nicotinamide, and dinucleotide, which are labeled as red, blue, and black, respectively

Fig. 3. Comparison of Raman scattering spectrum and DFT calculated spectrum in the spectral range of 200~1 800 cm^-1 (a) and 1 800~3 300 cm^-1 (b)

Fig. 4. Linear fitting of DFT calculated and Raman experimental wave numbers