CAS 9001-08-5 appears in our catalog under these names: BUTYRYLCHOLINESTERASE, HUMAN, CHOLINESTERASE, BUTYRYL FROM HORSE SERUM, BUTYRYLCHOLINESTERASE FROM EQUINE SERUM, Cholinesterase, Horse serum. Offered by: Sigma-Aldrich, MedChemExpress. Available pack sizes: 1VL, 1.2KU, 12KU, 6KU, 1KU, 5KU, 500 U, 1 KU.