CAS 1733-55-7 appears in our catalog under these names: Ethyldiphenylphosphinate, 97%, Ethyl diphenylphosphinate 98%, Phosphinic acid,P,P-diphenyl-, ethyl ester, 98%, 98%, Ethyldiphenylphosphinate, 95%. Offered by: Combi-blocks, Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 100mg.