What regulatory guidelines apply to 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one (CAS: 99429-78-4)?

4-Hydroxythieno[2,3-b]pyridin-6(7H)-one (CAS: 99429-78-4) is subject to various regulatory guidelines. In the USA, it is regulated by the EPA and OSHA for workplace safety. Globally, it falls under the purview of the GHS (Globally Harmonized System of Classification and Labelling of Chemicals) for hazard communication. In Europe, it is also covered by REACH regulations, which require manufacturers and importers to register substances with the European Chemicals Agency (ECHA). Additionally, FDA regulations may apply if the compound is used in pharmaceutical or food-related applications.