CAS 84604-16-0 appears in our catalog under these names: Yeast extract, M-Gredient® Yeast Peptone B1, M-Gredient® Yeast Peptone B2, M-Gredient® Yeast Peptone B3, M-Gredient® Yeast Peptone B4. Offered by: Thermo Scientific (Acros), Sigma-Aldrich. Available pack sizes: 1KG, 5KG, 25KG, 500G, 250G.