* search The Good Scents Co. [[http://www.thegoodscentscompany.com/search2.html]]
  * Frutarom index [[https://products.frutarom.com/apex/f?p=105:1:0]]
  * loookup material at leffingwell [[http://www.leffingwell.com/]]
  * search Taytonn [[http://www.taytonn.com/index.php/products/viewer/aroma-chemicals]]
  * Moellhausen Katalog "Natural and Synthetic Chemicals" {{:fc2011_mbludatabook.pdf|}}
  * short overview of aroma compounds [[http://en.wikipedia.org/wiki/Aroma_compound]]
  * green leaf volatiles [[http://de.wikipedia.org/wiki/Gr%C3%BCne_Blattduftstoffe]]