CAS 557-08-4 appears in our catalog under these names: Zinc Undecylenate, 10-Undecenoic acid zinc salt/ 99.8% (existing batch purity), 10–Undecenoic acid zinc salt (Zinc undecylenate), Zinc undecylenate, 97.50%, UNDECYLENIC ACID, ZINC SALT, 98%. Offered by: TRC, TargetMol, GLPBio, Chemat, Sigma-Aldrich. Available pack sizes: 5g, 1g, 100mg, 500mg, 10mM (in 1ml dmso), 100g, 500g, 500 mg.