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. We started the studies on the spectral database system in early 1970s. The construction of the database in the present format was started in 1982 in a mainframe computer that was finished at the end of March 1999. In 2001, National Metrology Institute of Japan (NMIJ) under National Institute of Advanced Industrial Science and technology (AIST) started to manage and to maintain the SDBS. Currently, EI-MS spectrum, 1H NMR spectrum, 13C NMR spectrum, FT-IR spectrum, and the compound dictionary are active for correcting and maintenance of the data. Since 1997, SDBS has opened to the public with free of charge through TACC (Tsukuba Advanced Computing Center) as RIO-DB (Research Information Data Base). The total accumulated number of access almost reached 146 million at the end of August 2006. SDBS is a fact database that contains spectral pattern and has been an important database that sends information from Japan to all over the world. The numbers of the data present at the end of September 2004 were as follows.
Compounds: ca 32800 compounds updated MS: ca 23500 spectra updated 1H NMR: ca 14300 spectra updated 13C NMR: ca 12500 spectra updated FT-IR: ca 50500 spectra updated Raman: ca 3500 spectra ESR: ca 2500 spectra
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