Wiswesser Line Notation
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Wiswesser Line Notation

Wiswesser line notation (WLN), invented by William J. Wiswesser in 1949,[1][2][3][4][5] 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). It was also the tool used to develop the CAOCI (Commercially Available Organic Chemical Intermediates) database, the datafile from which Accelrys' (successor to MDL) ACD file was developed. WLN is still being extensively used by BARK Information Services. Descriptions of how to encode molecules as WLN have been published in several books.[6][7][8]



  1. ^ Wiswesser, William J. (1951). Simplified chemical coding for automatic sorting and printing machinery. Willson Products Inc., Reading, PA.
  2. ^ Wiswesser, William J. (1952). "The Wiswesser line formula notation". Chem. Eng. News. 30 (34): 3525-3526. doi:10.1021/cen-v030n034.p3523.
  3. ^ Wiswesser, William J. (1968). "107 years of line-formula notations (1861-1968)". Journal of Chemical Documentation. 8 (3): 146-150. doi:10.1021/c160030a007.
  4. ^ Wiswesser, William J. (1982). "How the WLN began in 1949 and how it might be in 1999". J. Chem. Inf. Comput. Sci. 22 (2): 88-93. doi:10.1021/ci00034a005.
  5. ^ Wiswesser, William J. (1985). "Historic development of chemical line notation". J. Chem. Inf. Comput. Sci. 25 (3): 258-263. doi:10.1021/ci00047a023.
  6. ^ Wiswesser, William J. (1954). A line-formula chemical notation. Thomas Y. Crowell Co., New York, NY.
  7. ^ Smith, Elbert George; Addelston, Aaron; Wiswesser, William J. (1968). The Wiswesser line-formula chemical notation. McGraw-Hill Book Co., New York, NY.
  8. ^ Smith, Elbert George; Baker, P. A. (1975). The Wisswesser Line-Formula Chemical Notation (WLN). Chemical Information Management Inc., Cherry Hill, NJ.
  9. ^ Apodaca, Rich (July 20, 2007). "Everything Old is New Again - Wiswesser Line Notation (WLN)". Retrieved .
  10. ^ Dalke, Andrew (October 15, 2003). "WLN - History of Chemical Nomenclature". Retrieved .

External links

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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