Welcome to Spectral Database for Organic Compounds, SDBS.
This is a free site organized by National Institute of Advanced Industrial Science and Technology (AIST), Japan.

NMR: T.Yamazaki, M.Nabeshima, T.Saito, T.Yamaji, K.Hayamizu, M.Yanagisawa and O.Yamamoto
MS: S.Matsuyama, C.Ono and N.Wasada
ESR: K.Someno
IR: S.Matsuyama, Y.Takizawa, S.Kinugasa, K.Tanabe and T.Tamura
Raman: K.Tanabe and J.Hiraishi

We are doing our best to compile high quality databases. However, there are no such databases without any errors or mistakes. We make no warranties to those effects and shall not be liable for any damage that may result from errors in the database. You can check the page Known Errors of Mistakes in SDBS. When you find new errors or mistakes, please inform us by email (see this page for contact details).

Access to this database is free of charge. Automatically collect data by robots or downloading large amounts of data are prohibited.

We also request that when you use the data of our SDBS in your publication or presentation, a proper acknowledgement be given as follows:
SDBSWeb : https://sdbs.db.aist.go.jp (National Institute of Advanced Industrial Science and Technology, date of access)