This book establishes the standardized nomenclature for corrinoids, a class of compounds characterized by a macrocyclic ring of four reduced pyrrole rings and a central cobalt atom. Authored by the International Union of Pure and Applied Chemistry, this text details the structural features of corrinoids, including the regular arrangement of substituents and the oxidation state of the cobalt atom. It further outlines the symbolic representation for corrinoids containing metals other than cobalt, providing a systematic framework for chemical communication within this field.

This work is recognized as a foundational document for the systematic naming of corrinoids, essential for clear communication in organic chemistry and biochemistry. Its publication by the International Union of Pure and Applied Chemistry signifies its authoritative status within the scientific community. The text provides a rigorous framework that enables researchers to precisely describe and discuss these complex molecules.