Questions tagged [nomenclature]
This tag should be used for questions about the naming of compounds and elements, usually using systematic names according to IUPAC recommendations, but also using retained traditional names.
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How to identify whether given element is meta(-ate) ion or meta(-ite) ion? [duplicate]
Like why $\ce{PbO3-}$ is a meta plumbate anion because definition of meta(-ate) ion is that it has maximum oxidation state of Pb by using minimum oxygens. But in this case how oxidation state of Pb is ...
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What's the correct name of this compound ..?
In an exercise for naming organic compounds, the compound shown below is named “3-ethyl-6-methylcyclohexene” in my textbook and even on Pubchem (https://pubchem.ncbi.nlm.nih.gov/compound/3-Ethyl-6-...
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Selection of parent chain in a halogenated compound with double and triple bonds
We were asked to select the parent chain for naming the halogenated compound containing double and triple bonds:
My teacher told me that we choose the orange (1) one over the blue one (3) because as ...
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why is alpha-linolenic acid "alpha"?
I'm learning about how fatty acid names are formed. In the process, I noticed a molecule called alpha-linolenic acid. There's a similar molecule called linoleic acid. Both have 18 carbons, but alpha-...
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Who defines the nomenclature of chemical elements in German?
I'm seeking the document which mentions the names of chemical elements in German. Some of them were changed in the past (e.g. Jod to Iod for iodine). IUPAC defines the standard name of elements for ...
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Naming alkanes with two branches in symmetrical positions [duplicate]
When naming an alkane with two substituents (e.g. methyl and ethyl branches), the carbon atoms in the main chain need to be assigned to lowest numbers possible. In the example in this link, why is the ...
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Why is this amine called this way?
I used a molecule drawing app to name the compound in the image, an amine. The name of the compound is 3-(aminomethyl)hexane according to the app. Shouldn't the name be 2-ethylpentan-1-amine?
The ...
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Organic compound nomenclature
As I learn nomenclature, I was told that -OH has higher priority than alkene. However, the last compound says otherwise. What is the key here?
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How to apply the Cahn–Ingold–Prelog priority rules to an isotopically-labeled molecule?
Is the following the correct designation (S) for the chiral carbon in a skeletal representation of 1-chloro(3-13C)butan-2-amine?
The CIP rules say to go one at a time by each rule until you find an ...
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Why is o used for hydroxy groups in IUPAC naming instead of saying 2-hydroxy [closed]
For this question, i marked compound II correct as 2-methylbenzaldehyde and got the question correct, but for compound I, i marked it wrong and suggested the name to be 2-hydroxybenzaldehyde. I got ...
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Are CAS numbers considered proprietary?
I’m interested in working with a large dataset consisting of CAS numbers and each corresponding molecule/chemical unit’s name. From my understanding, CAS Registry Numbers are assigned and stored by a ...
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Nomenclature for 5-Methylhepta-1,3,6-triene
I was practicing writing nomenclatures for several organic compounds with the help of Blue Book Essentials and I have some queries regarding the following structure:
According to the blue book, the ...
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How do I number the atoms in strychnine?
I know the basics of naming organic molecules, but this one is a bit more complex than I'm capable of. How can I number the atoms in strychnine?
Systematic IUPAC name: ($4$bR,$4$b$^1$S,$7$aS,$8$aR,$8$...
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Can someone help me name this molecule? [closed]
I'm having a hard time deciphering it's IUPAC name like I have 4-butanoxy and 3-propanoxy so far, but how do you put it all together with the double-bonded oxygen?
Thank you and really sorry for the ...
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How to name LiN(CF2SO3)2?
I found this compound in the list of inorganic lithium salts from this article on ScienceDirect.
It is said to be of the sulfonate group. Let's focus on the anion alone.
I'm not sure if it can be bis(...
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