CAS 9004-07-03 appears in our catalog under these names: α-Chymotrypsin - from bovine pancreas, >45 units/MG protein, alpha-Chymotrypsin, a-Chymotrypsin - Enzyme activity 1000units/mg. Offered by: Biosynth. Available pack sizes: 50g, 1kg, 25g, 0,5kg, 10g, 100g, 250g, 500g.