Terms sourced from: http://iupac.org/publications/pac/70/5/1129/

"Glossary of terms used in medicinal chemistry (IUPAC Recommendations 1998)", Wermuth, C.G.;Ganellin, C.R.;Lindberg, P.;Mitscher, L.A., Pure and Applied Chemistry 1998, 70(5), 1129