CAS 9041-92-3 appears in our catalog under these names: A-1-ANTITRYPSIN FROM HUMAN PLASMA, ╬▒1-Antitrypsin, Human Plasma 1PC X 1MG, ╬▒1-Antitrypsin, Human Plasma 1PC X 5MG. Offered by: Sigma-Aldrich. Available pack sizes: 100MG, 25MG, 500MG, 5MG, 1MG.