1. heterocyclic - Noun
2. heterocyclic - Adjective
3. heterocyclic - Adjective Satellite
a compound containing a heterocyclic ring
containing a closed ring of atoms of which at least one is not a carbon atom
Source: WordNetAs a bicyclic, heterocyclic purine derivative, uric acid does not protonate as an oxygen (−OH) like carboxylic acids do. Source: Internet
Commercial use Leading companies with a vast number of patents related to heterocyclic compounds are Bayer, Merck, Ciba-Geigy, Pfizer, Eli Lily, BASF, Hoffmann La Roche, ER Sqibb, Warner Lambert and Hoechst. Source: Internet
Joule, p. 133 In general, the hydride ion is a poor leaving group and occurs only in a few heterocyclic reactions. Source: Internet
It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a keto group at position 2). Source: Internet
But this does not prevent a compound such as borazine (which has no carbon atoms) from being labelled "heterocyclic". Source: Internet
Five-member ring compounds with four heteroatoms: With 5-heteroatoms, the compound may be considered inorganic rather than heterocyclic. Source: Internet