3,4-diethyl-1H-pyrrole-1-carboxylic acid

1-benzyloxycarbonyl-3,4-diethylpyrrole

(3,4-diethyl-5-bromomethyl-pyrrol-2-yl)-(3,4-diethyl-5-bromomethyl-pyrrol-2-ylidene)-methane, hydrobromide

2-[(3,4-diethyl-1H-pyrrol-2-yl)methyl]-3,4-diethyl-1H-pyrrole

(5,5'-(methoxymethyl)-3,4,3',4'-tetraethyl-2,2'-dipyrryl)methene hydrobromide