Dicarboxylic Acids Aliphatic diacids are usually called by their common names. For IUPAC name,number the chain from the end closest to a substituent. Br HOOCCH2CHCH2CH2COOH 3-bromohexanedioic acid B-bromoadipic acid Chapter 20 7Chapter 20 7 Dicarboxylic Acids ▪ Aliphatic diacids are usually called by their common names. ▪ For IUPAC name, number the chain from the end closest to a substituent. 3-bromohexanedioic acid -bromoadipic acid HOOCCH2CHCH2CH2COOH Br