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pyrrole nucleus

 

Definition: of porphyrins, a cyclic tetrapyrrole; four pyrrole groups joined into an anular structure by way of –CH= (methylidyne) bridges between the a (2) position of one pyrrole and the a' (5) position of another pyrrole, the fourth pyrrole being joined to the first.

See Also: porphin, porphyrin

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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