1-(D-2,4-Diaminobutanoic acid)-4-D-phenylalanineoctapeptin A(sub 1) hydrochloride hydrate Antibiotic BU 2470 A BU 2470 A Octapeptin A(sub 1), 1-(D-2,4-diaminobutanoic acid)-4-D-phenylalanine-, hydrochloride, hydrate (1:5:4) RH1688000