What regulatory guidelines apply to 4-methoxybut-3-en-2-one (CAS: 4652-27-1)?

4-Methoxybut-3-en-2-one (CAS: 4652-27-1) falls under the scope of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) as a flammable liquid and requires proper labeling and handling. It is also subject to the European Union’s Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation, which mandates safety data sheets (SDS) and registration for manufacturers and importers. The U.S. Food and Drug Administration (FDA) and Environmental Protection Agency (EPA) also require compliance with specific regulations for handling and disposal, ensuring minimal environmental impact.