What regulatory guidelines apply to 4-Hydroxy-1-butanesulfonic acid (CAS: 26978-64-3)?

4-Hydroxy-1-butanesulfonic acid (CAS: 26978-64-3) is subject to the Global Harmonized System of Classification and Labeling of Chemicals (GHS) for its health and environmental hazards. It also complies with REACH regulations in the EU, which require suppliers to provide Safety Data Sheets (SDS) and register substances above certain tonnage levels. In the US, the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA) have specific handling and reporting requirements for this compound, especially when used in pharmaceuticals or cosmetics.