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Table 28(a) Carboxylic acids and related groups.Unsubstituted parent structures.

Type 1-Unlimited substitution

Acetic acid †

Acrylic acid

Malonic acid †

Succinic acid †

Benzoic acid

Fumaric acid

Furoic acid
(2-isomer shown)

Isonicotinic acid

Isophthalic acid

Maleic acid

Naphthoic acid
(2-isomer shown)

Nicotinic acid

Phthalic acid

Terephthalic acid
Type 3-No substitution

Formic acid †

Propionic acid †

Propiolic acid

Butyric acid †

Isobutyric acid †

Methacrylic acid

Palmitic acid

Stearic acid

Oleic acid

Oxalic acid, †

Glutaric acid †

Adipic acid

Cinnamic acid
For meaning of the "dagger" (†), see (1)

This HTML reproduction is as close as possible to the published version [see IUPAC, Commission on Nomenclature of Organic Chemistry. A Guide to IUPAC Nomenclature of Organic Compounds (Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.

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