What is IUPAC nomenclature?
The global definitive standard for naming chemical compounds.
IUPAC stands for the International Union of Pure and Applied Chemistry. It is a voluntary international standards-setting group for chemistry. They publish several volumes for correct nomenclature for all branches of chemistry.
A standardized form for naming chemicals is necessary - particularly for conveying accurate information in text instead of with diagrams - in order to make sure that everyone can understand everyone else in the field.