What regulatory guidelines apply to Ethyl 4-cyclopentyl-3-oxobutanoate (CAS: 68104-99-4)?

Ethyl 4-cyclopentyl-3-oxobutanoate (CAS: 68104-99-4) falls under the scope of the REACH regulations in the European Union, which require manufacturers and importers to register chemicals if they meet certain tonnage thresholds. Additionally, the substance may be regulated under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), which includes specific hazard classification criteria. In the United States, the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) may have specific regulations and guidelines for the use and handling of this chemical, particularly if it is intended for specific end uses such as food contact or pharmaceuticals.