Kanamycin monosulfate monohydrate

The antibiotic kanamycin is chemically related to streptomycin, as it is 4-0-(6-amino-6-deoxy-a-D-glucopyranosyl)-6-0-(3-amino-3-deoxy-a-D-glucopyranosyl)-2-deoxystreptamine. Two isomorphous crystalline compounds, namely, kanamycin monosulfate monohydrate and kanamycin monoselenate monohydrate, were used in elucidating... 

The absolute configuration of kanamycin A was determined by chemical studies, and by X-ray analysis of its monosulfate monohydrate.From the results obtained by X-ray analysis, the structures of the kanamycins (1, 2, and 3), neamine (4), and paromamine (5) (together with the numbering of the carbon atoms) are shown. 

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