Methyl yellow is a chemical compound that is commonly used in laboratory experiments to measure the pH level. It is also known by other names, including acid yellow 2, isocrotonic acid, and sodium salt yellow. Methyl yellow has a bright yellow color and is soluble in water, making it easy to use in experiments. Other synonyms that can be used to refer to this compound include gold yellow, dark yellow, and mustard yellow. These synonyms can be useful in scientific writing and discussions where a more varied vocabulary is needed. Overall, methyl yellow and its synonyms are important tools in chemistry research and analysis.