The Spectral Database for Organic Compounds (SDBS) is a free online searchable database hosted by the National Institute of Advanced Industrial Science and Technology (AIST) in Japan, that contains spectral data for ca 34,000 organic molecules.
The spectra were recorded in the region of 4,000 – 0 cm−1 with an excitation wavelength of 4,800 nm and a slit width of 100 – 200 micrometers.
[4] The EI-MS spectra were measured in a JEOL JMS-01SG or a JEOL JMS-700 spectrometers, by the electron ionization method, with an electronic accelerating voltage of 75 eV and an ion accelerating voltage of 8 – 10 kV.
The spectral acquisition was carried out using a flip angle of 22.5 – 30.0 degrees and a pulse repetition time of 30 seconds.
[5] Each spectrum is accompanied by a list of peaks with their respective intensities and chemical shifts reported in ppm and in Hz.
[5] Each spectrum is accompanied by a list of the observed peaks with their respective chemical shifts in ppm and their intensities.
[6] If a spectrum of an unknown chemical compound is available, a reverse search can be carried out by entering the values of the chemical shift, frequency or mass of the peaks in the NMR, FT-IR or EI-MS spectrum respectively.
This type of search affords all the chemical compounds in the database that have the entered spectral characteristics.