CAS 9004-06-2 appears in our catalog under these names: Elastase, ELASTASE, LEUKOCYTE FROM HUMAN &, Elastase, Human Neutrophil 1PC X 100UG, Elastase, Human Neutrophil 1PC X 1MG, Elastase, Human Neutrophil 1PC X 50UG. Offered by: GLPBio, Sigma-Aldrich. Available pack sizes: 1u, 1UN, 100UG, 1MG, 50UG.