AY5190000 Dihydrostreptomycin tripantothenate Streptomycin, dihydro-, D-tripantothenate (salt) beta-Alanine, N-(2,4-dihydroxy-3,3-dimethyl-1-oxobutyl)-, (R)-, compd. with-O-2-deoxy-2-(methylamino)-alpha-L-glucopyranosyl-(1-2)-O-5-deoxy-3-C-(hydroxymethyl)-alpha-L-lyxofuranosyl-(1-4)-N,N'-bis(aminoiminomethyl)-D-streptamine