This document provides common names and IUPAC names for several organic compounds. It lists the structures, common names, and systematic IUPAC names for 10 compounds, including formaldehyde, formic acid, acetaldehyde, acetic acid, glyoxal, oxalic acid, phthaldehyde, acetone, benzoic acid, and acetophenone. The IUPAC names provide more precise systematic naming according to IUPAC nomenclature rules.