Compos�es h�et�erocycliques 91 Chemistry 78 Organic 78 SCIENCE 78 Heterocyclic chemistry 73 Heterocyclic compounds 73 Chimie des compos�es h�et�erocycliques 69 Compos�es organiques cycliques 26 Heterocyclic Compounds 26 Organic cyclic compounds 26 Chimie organique 5 HETEROCYCLIC COMPOUNDS 5 CHEMICAL REACTIONS 4 Chemistry, Organic 4 organic chemistry 4 Chimie des composés hétérocycliques 3 Organic Chemistry 3 Organic compounds 3 Physical Sciences & Mathematics 3 RESEARCH 3 Science 3 Synthesis 3 Compos�es organiques 2 Heterocykliska föreningar 2 St�er�eochimie 2 Stereochemistry 2 Synth�ese 2 35.59 heterocyclic compounds 1 AMIDES 1 ANIONS 1