Cosmetic Science Talk
What are the INCI names for: 4-Ethylheptanoic Acid, 3-Ethyl-4-methylheptanoic Acid, 4-Methylheptanoic Acid, 5-Methylheptanoic Acid? Do I have to use the "iso" here?
And how to name 1-Methoxyheptyl Alcohol?
Administrator, Professional Chemist
These compounds may not have INCI names.
They certainly aren't commonly used & I couldn't find any obvious names
Learn to formulate cosmetics
The first is a fragrance
The second, I couldn't find anything.
The 3. & 4. are isooctanoic acid isomers. In cosmetics, using the name iso-blabla for mixtures of different blabla isomers containing mostly iso-isomers but not only that is okay. An example are isostearates. Still, I don't think that in this case you should call them that but go with the 'real' name unless they are not approved cosmetic ingredients (and you shouldn't add them) or can be termed 'fragrance' as well.
INCI is not a strict science but rather imprecise and often employs traditional names or colloquial terms and sometimes it's not even fully defined. It's not like IUPAC, SMILES or other chemical nomenclatures with which everyone is able to name a compound just by looking at it's molecular structure or vice versa draw it from the name.
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