Carboxylic acids are often identified by their common names. Carboxylic acids also have the suffix -ic acid which is recommended by IUPAC. For example, butyric acid is butanoic acid according to (CH3CH2CH2CO2H) IUPAC Guidelines for Nomenclature of Complex Molecules Containing Carboxylic Acids Carboxyls can be considered as one of the main molecular groups. Although there are other substituents such as 3-chloropropanoic acid. Substituents may also be referred to as "carboxylic" or "carboxylic acid" on other base molecular structures, such as 2-carboxyfuran.
The carboxylate ion (R−COO− or R−CO−2) is often designated with the suffix -ate corresponding to the general form of the acid -ate and -ate is for conjugate acids and conjugate bases respectively such as conjugates of acetic acid The base is acetate |
Carbonic acid, which is found in nature's bicarbonate buffer system. It is not generally classified as a carboxylic acid. Although there are groups that look like COOH groups.