The International Union of Pure and Applied Chemistry (IUPAC) is a global organization that aims to advance the chemical sciences. Founded in 1919, it brings together chemists from around the world to promote collaboration and standardization in chemistry. IUPAC is known for establishing universal nomenclature, which helps scientists communicate clearly about chemical substances. IUPAC also plays a crucial role in developing guidelines for chemical research and education. It organizes conferences, publishes scientific journals, and provides resources for educators and researchers. By fostering international cooperation, IUPAC helps ensure that chemistry remains a vital and evolving field.