File:Fatty acid carbon numbering.svg
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Summary[edit]
DescriptionFatty acid carbon numbering.svg |
English: Carbon numbering schemas for fatty acids:
The position of a double bond is always the carbon closest to the carboxyl, even in the omega numbering. Thus a acid with 18 carbons (as shown) has the bond between carbons and . A common mistake is to say that the last carbon is . Another common mistake is to say that the position of a bond in omega-notation is the number of the carbon closest to the end. For double bonds, these two mistakes happen to compensate each other. However, for substitutions and other purposes, they don't: a hydroxyl at is at carbon 15, not 16.[1] Note also that the "−" in the omega-notation is a minus sign, and should in principle be read "omega minus three". However, it is very common (especially in non-scientific literature) to write it "ω-3" (with a hyphen/dash) and read it as "omega-three".Eesti: Süsinikuaatomite nummerdamine.
Galego: Numeración dos carbonos dos ácidos graxos; neste caso nun ácido graxo de 18 carbonos. Os números sistemáticos (IUPAC) están en azul. A notación omega está en vermello. A notación con letras gregas está en verde.
Latina: Acidi adipati structura: sinistra acidum carboxylicum cum atomo carboni numero caeruleo 1, dextrorsum catena aliphatica cum carboniis numeris caeruleis increscentibus. Numeri rubri ad ultimum carbonium nomine omega spectant: hoc ultimum enim descriptionis qualitatis propriae sui numero quoque 1 (rubro) numeratur. Nota cursum numerandi hic contrarium esse.
Тыва дыл: Стеаридинниг кислота (Атомнарның физиологтук дугаарлаан ёзузу кызыл өң-биле, а химиктиг — көк өң-биле көргүстүнген). |
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Date | Original: 31 August 2020; Vector: 3 February 2024 | ||
Source | Own work based on: Fatty acid carbon numbering.png by Jorge Stolfi | ||
Author | Vectorization: Alhadis | ||
SVG development InfoField |
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This file supersedes the file Fatty acid carbon numbering.png. It is recommended to use this file rather than the other one.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:02, 2 February 2024 | 1,276 × 270 (4 KB) | Alhadis (talk | contribs) | == {{int:filedesc}} == {{Information | Description = {{en|1=Carbon numbering schemas for fatty acids: # Systematic {{W|IUPAC}} numbering (<math>C-1, C-2, C-3, ...</math>) starting from 1 at the carboxyl carbon ({{Color|#0000FD|blue}}). # Old Greek letter labels (<math>\alpha, \beta, \gamma, \delta, ...</math>) starting at the carbon <em>after</em> the carboxyl ({{Color|#007200|green}}). # Omega-minus numbering (<math>\omega, \omega-1, \omega-2, ...</math>) starting at the end opposite to the... |
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Short title | Carbon numbering schemas for fatty acids |
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Width | 1276 |
Height | 270 |