porphyrin 

  1. 名詞
不可數名詞: 卟啉(又稱紫質, 一類由四個吡咯類亞基的α-碳原子通過次甲基橋互聯而形成的大分子雜環化合物)

    
                        
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例句

                

                    
    
                                                    
  1. 
                                The porphyrin ring structure is planar.                            
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  2. 
                                The Fe is bonded to 4 N atoms of the porphyrin ring.                            
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  3. 
                                An example of catalysts of this type is Sander's porphyrin trimer.                            
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  4. 
                                Chloroquine may be used to increase porphyrin secretion in some EPs.                            
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  5. 
                                In hemoglobin an iron(II) ion is complexed by a macrocyclic porphyrin ring.                            
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