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.Yamaji, T.Saito, K.Hayamizu, M.Yanagisawa and O.Yamamoto
MS: N.Wasada
ESR: K.Someno
IR: S.Kinugasa, K.Tanabe and T.Tamura
Raman: K.Tanabe and J.Hiraishi