The common names of aldehydes are taken from the names of the corresponding carboxylic acids: formaldehyde, acetaldehyde, and so on. Naming Aldehydes and Ketones · Concept Review Exercises · Summary · Answers. ether, thiol, sulfide, disulfide, aldehyde, and ketone families, and describe how they . When naming aldehydes and ketones according to the. IUPAC rules, the. Note the similarity in structure of aldehydes and ketones. Because they both contain the The IUPAC system may be used for naming aldehydes. We must first.