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The following is a list of straight-chain alkanes, the total number of isomers of each (including branched chains), and their common names, sorted by number of carbon atoms. [ 1 ] [ 2 ] Number of C atoms
C 20 H 12 O 5: fluorescein: 2321-07-5 C 20 H 13 N 3 O 7: anthracene picric acid: 5937-78-0 C 20 H 14 NO 4: sanguinarine: 2447-54-3 C 20 H 14 O 4: diphenyl isophthalate: 744-45-6 C 20 H 14 O 4: diphenyl terephthalate: 1539-04-4 C 20 H 14 O 4: phenolphthalein: 77-09-8 C 20 H 14 O 4: resorcinol dibenzoate: 94-01-9 C 20 H 15 NS: trityl ...
Arachidic acid, also known as icosanoic acid, is a saturated fatty acid with a 20-carbon chain. It is a minor constituent of cupuaçu butter (7%), [2] perilla oil (0–1%), [3] peanut oil (1.1–1.7%), [4] corn oil (3%), [5] and cocoa butter (1%). [6]
The side chains are: an ethyl- at carbon 4, an ethyl- at carbon 8, and a butyl- at carbon 12. Note: the −O−CH 3 at carbon atom 15 is not a side chain, but it is a methoxy functional group. There are two ethyl- groups. They are combined to create, 4,8-diethyl. The side chains are grouped like this: 12-butyl-4,8-diethyl.
Arachidonic acid (AA, sometimes ARA) is a polyunsaturated omega−6 fatty acid 20:4(ω−6), or 20:4(5,8,11,14). [2] [3] If its precursors or diet contains linoleic acid it is formed by biosynthesis and can be deposited in animal fats. It is a precursor in the formation of leukotrienes, prostaglandins, and thromboxanes. [4]
20 C20. 21 C21. 22 C22. 23 C23. 24 C24. 25 C25. ... This list is ordered by the number of carbon atoms in a carboxylic acid. C1. IUPAC name: Common name: Structural ...
As a rule of thumb, the boiling point rises 20–30 °C for each carbon added to the chain; this rule applies to other homologous series. [18] A straight-chain alkane will have a boiling point higher than a branched-chain alkane due to the greater surface area in contact, and thus greater van der Waals forces, between adjacent molecules.
In physiological literature, it is given the name 20:5(n−3). It also has the trivial name timnodonic acid. In chemical structure, EPA is a carboxylic acid with a 20-carbon chain and five cis double bonds; the first double bond is located at the third carbon from the omega end.