pyrrole

OBS: Le noyau du pyrrole se retrouve dans de nombreux produits naturels : pigments biliaires, porphyrines, etc.
OBS: Formule chimique : C[indice 4]H[indice 5]N ou C[indice 4]H[indice 4]NH

OBS: Pyrroles readily combine with such metals as iron, copper, and nickel, which accounts for their importance in the formation of such biochemically essential complexes as porphyrins.
OBS: Chemical formula: C[subscript 4]H[subscript 5]N or C[subscript 4]H[subscript 4]NH