Beilstein: Handbook of Organic Chemistry: Vol 22 Heterocyclic Compounds, Part 4

The 5th supplementary series of the Beilstein handbook (4th edition) covers the organic compounds reported in the primary literature from 1960 up to 1980. Volumes 20 to 22 cover heterocyclic compounds which contain a nitrogen atom as the only ring-heteroatom. Volume 22, which is divided into several subvolumes, deals with nitrogen heterocylces bearing a large variety of functional groups. Subvolume 22/4 covers di- and poly-carboxylic acids with general formulas falling within the range CnH2n-3 NO4 to CnHn2-33NO13. In this volume will be found picolinic and lutidinic acids, and cinchomeronic and isocinchomeronic acids.