CAS 52073-75-3 appears in our catalog under these names: 4-(Di-pyrrol-2-yl-methyl)pyridine, 95%, 4-(Di(1H-pyrrol-2-yl)methyl)pyridine, 97%, 4-(Di(1H-pyrrol-2-yl)methyl)pyridine, 95%, 95%. Offered by: Combi-blocks, AmBeed, Chemat. Available pack sizes: 1g, 250mg, 100mg.