ORD refers to the change in optical rotation with the change in wavelength of light source. i.e. applied only in optically active compounds.•
Optical rotation caused by compound changed with wavelength of light was first noted by Biot in 1817.•
ORD curves in recent years are made use in structural determination by comparing the curve obtain from compound believed to have related structures particularly applied to carbonyl compounds. 3 February 11, 2013 M.M.C.P.