1H-Pyrrole-2-carbaldehyde, Pyrrole-2-carboxaldehyde, pyrrol-2-carboxaldehyde, 2-PCA, 2-pyrrolecarboxaldehyde, 1H-Pyrrole-2-carboxaldehyde, A-PYRROLALDEHYDE, 2-pyrrolecarbaldehyde, 2-FORMYL-1H-PYRROLE, 2-Pyrrolaldehyde, pyrrole-2-carbaldehyde, PYRROLE-2-ALDEHYDE, 2-Formylpyrrole