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Harvard

Search Harvard by triple pattern

Matches in Harvard for { ?s ?p membered heterocyclic compounds with two hetero-atoms in the ring from groups V and/or VI of the periodic table -- pt. D. Five-membered heterocyclic compounds with more than two hetero-atoms in the ring. -- pt. F. Six-membered heterocyclic compounds with a single nitrogen atom in the ring; pyridine, polymethylenepyridines, quinoline, isoquinoline, and their derivatives -- pt. G. Six-membered heterocyclic compounds with a single nitrogen atom in the ring to which are fused two or more carbocyclic ring systems, and six-membered ring compounds where the hetero-atom is phosphorus, arsenic, antimony, or bismuth. Alkaloids containing a six-membered heterocyclic ring system -- pt. H. -- pt. L. Fused-ring heterocyclic compounds containing three or more nitrogen atoms.. }

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