Wiswesser line notation (WLN), invented by William J. Wiswesser in 1949, was the first line notation capable of precisely describing complex molecules. It was the basis of ICI Ltd's CROSSBOW database system developed in the late 1960s. WLN allowed for indexing the Chemical Structure Index (CSI) at the Institute for Scientific Information (ISI).
The Wiswesser line notation (WLN), devised by William J. Wiswesser in 1949, was a pioneering notation system that could precisely represent intricate molecules. It formed the basis of ICI Ltd's CROSSBOW database system developed in the late 1960s. WLN facilitated indexing of the Chemical Structure Index (CSI) at the Institute for Scientific Information (ISI).