Intern:Alkenones in PANGAEA

This is a work in progress page.

=Definition= Alkenones are unsaturated ketones bearing a C=O-functional group and several double bonds. They are important temperature biomarkers and are for example used to calculate the UK36-index.

A typical biomarker alkenone is a long-chain hydrocarbon with 26-41 carbon atoms, 2-4 double bonds and a keto-group in position 2 or 3, respectively.

=Nomenclature of alkenones=

Abbreviations
In order to facilitate readability, an abbreviation nomenclature has been established. Although several variations might exist, PANGAEA agrees on the following format:

With
 * C#1:#2Me (Me = methyl -> stands for keto-group in position 2)
 * C#1:#2Et (Et = ethyl -> stands for keto-group in position 3)


 * 1) 1 = carbon chain length


 * 1) 2 = number of double bonds

Systematic IUPAC names
PANGAEA encourages usage of the latest IUPAC recommendations "Nomenclature of organic chemistry" (2013). An alkenone-name consists basically of three