SDBS is an integrated spectral database system for organic compounds,which includes 6 different types of spectra under a directory of the compounds. The six spectra are as follows, an electron impact Mass spectrum (EI-MS), a Fourier transform infrared spectrum (FT-IR), a 1H nuclear magnetic resonance (NMR) spectrum, a 13C NMR spectrum, a laser Raman spectrum, and an electron spin resonance (ESR) spectrum. Approximately 34,000 compounds are in the database. Records include graphical structures and spectra, with peak assignments in many cases. Compounds may be searched by name, molecular formula, molecular weight, CAS Regostry Number, number of atoms/elements, and spectral data.