4-Bromo-1-methyl-1H-pyrrole-2-carboxaldehyde is an intermediate in synthesizing 1-Methyl-4-propyl-1H-pyrrole-2-carboxaldehyde (M331183), an impurity of Clindamycine (C580000), which is a semi-synthetic antibiotic prepared from Lincomycin. Antibacterial.