What regulatory guidelines apply to (3S)-3-Hydroxybutanoic acid (CAS: 6168-83-8)?

The (3S)-3-Hydroxybutanoic acid (CAS: 6168-83-8) is classified under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) as a skin irritant. It is also subject to the European Union's Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) regulations, which require detailed safety data sheets and potential restrictions on its use. Additionally, the food and drug administration (FDA) and environmental protection agency (EPA) may have specific labeling and handling requirements depending on its intended use.