CAS 931-33-9 appears in our catalog under these names: 4-Bromo-2-pyrrolecarboxaldehyde, 4-Bromo-1H-pyrrole-2-carbaldehyde 97%, 4-Bromo-1H-pyrrole-2-carbaldehyde, 97%, 97%, 4-Bromo-1H-pyrrole-2-carbaldehyde, 95%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 100g, 100mg, 250mg, 1g, 5g, 10g, 25g, 500g.