KEYS TO ANTIBIOTICS 



149 



4. Essentially white substances, basic, water- 

 soluble 



a. Positive Sakaguchi reaction; negative nin- 

 hydrin reaction 



streptomycin group 

 streptomycin 

 pseudostreptom^Tin 

 mannosidostreptomycin 



b. Positive Sakaguchi reaction, positive nin- 

 hNTlrin reaction 



c. Positive Sakaguchi reaction; ninhydrin re- 

 action not reported 



d. Negative Sakaguchi and ninhvdrin reactions 



e. Negative Sakaguchi reaction; positix'e nin- 

 hydrin reaction 



(1) Substance yielding at least one amino 

 acid upon hydrolysis 

 streptothricin group 



actinorubin 

 antibiotic 186 

 antibiotic 156 

 antibiotic EI 5 

 evericin 

 geomycins 

 grasseriomycin 

 grizin 

 lavendulin 



(2) Substances yielding no amino acids upon 

 hydrolysis; amino sugar compounds 

 neomycins 



kanamycins 



catenulin 



hydroxymj^cin 



f. Unknown ninhydrin and Sakaguchi reactions 



antibiotic GB/229? 

 antibiotic of Alukherjee 

 hygromycin B 

 Polypeptides or proteinaceous substances 

 actinin 



antibiotic of Sackmann 

 echinomycin 

 neocide 



hydroxystreptomycin 

 dihydrostreptomycin 

 dihydrodesoxystreptomycin 



antibiotic 1943 

 eurimycin 

 antibiotic A 6 

 antibiotic A 20 

 antibiotic 587/ 13 

 flaveolin 

 fuscomycin 

 roseocitrin B 

 roseomycin 



luridin 



mycothricin 



pleocidins 



racemomycins 



roseothricin 



streptin 



streptolins 



streptothricin 



desertomycin? 



antibiotic GB/229? 



monomycni 

 paromomycin 

 novomycin? 

 trehalosamine 



neonocardin 

 virusin 1609 



cephalomycin 

 actinomycetin 

 bacteriolvtic factors 



