What regulatory guidelines apply to 5-Chloro-1H-pyrazolo[4,3-b]pyridine (CAS: 94220-45-8)?

5-Chloro-1H-pyrazolo[4,3-b]pyridine (CAS: 94220-45-8) falls under the hazard category of a reactive chemical with potential fire and explosion risks. It is regulated under the Globally Harmonized System (GHS) and requires classification as a flammable solid. In the European Union, it is subject to the REACH regulation, which may require authorization if it meets certain criteria. In the USA, the EPA and FDA have oversight responsibilities, with specific storage and handling requirements under the Resource Conservation and Recovery Act (RCRA).