methyl 5-bromo-1H-pyrrole-2-carboxylate is a marine derived natural products found in Lissodendoryx sp.

4,5-Dibromo-1H-Pyrrole-2-Carboxylic Acid (4,5-Dibromo-2-pyrrolic acid) is a marine derived natural products found in Agelas oroides.

Methyl 4-bromopyrrole-2-carboxylate (4-Bromo-2-(methoxycarbonyl)-1H-pyrrole) is a marine derived natural products found in Lissodendoryx sp.

1H-Pyrrole-2-carboxylic acid, 4,5-dibromo-1-methyl- (1-methyl-4,5-dibromopyrrole-2-carboxylic acid) is a marine derived natural products found in Agelas flabelliformis.

Pyrrole-2-carboxylic acid (Minaline) was first identified as a degradation product of sialic acids, then as a derivative of the oxidation of the D-hydroxyproline isomers by mammalian D-amino acid oxidase. The latter relationship results from the lability of the direct oxidation product, A'-pyrroline-4-hydroxy-2-carboxylic acid, which loses water spontaneously to form the pyrrole. A similar reaction is catalyzed by the more specific allohydroxy-D-proline oxidase of Pseudomonas. In whole animal observations, pyrrole-2-carboxylate (PCA) ' was identified in rat or human urine after administration of the D-isomers of hydroxyproline, a finding ascribable to the action of D-amino acid oxidase. Urinary excretion of N-(pyrrole-2-carboxyl) glycine has been reported in a 5-year-old affected with type II hyperprolinemia; The child has mild developmental delay, recurrent seizures of the grand mal type and EEG alterations.