What regulatory guidelines apply to 4-Cinnolinol (CAS: 875-66-1)?

4-Cinnolinol (CAS: 875-66-1) is subject to various regulatory guidelines. Under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), it must be classified and labelled according to its inherent hazards. In the European Union, it is registered under REACH regulations, and in the United States, it falls under the jurisdiction of the EPA and may require specific handling and disposal procedures. FDA regulations also apply if it is used in pharmaceutical applications.