单词	heterocyclic
释义	heterocyclic /ˌhɛt(ə)rə(ʊ)ˈsʌɪklɪk / /ˌhɛt(ə)rə(ʊ)ˈsɪklɪk/ adjective Chemistry Denoting a compound whose molecule contains a ring of atoms of at least two elements (one of which is generally carbon).The majority of photosensitive molecules have a heterocyclic ring structure similar to that of chlorophyll or hemoglobin.... Unlike hydrocarbon based aromatics, which react most readily with electrophiles, perfluoro-aromatics and heterocyclic ring systems react better with nucleophiles. Cooking meats at high temperatures creates chemicals called heterocyclic amines that are otherwise not present in uncooked meats.
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