Kanamycin Acid Sulfate, BP is an aminoglycoside antibiotic often used to select for bacteria which have been successfully transformed with a plasmid conferring kanamycin resistance. Kanamycin is very soluble in aqueous solution at 92.3 mg/mL.
Standard grade Kanamycin is composed of a mixture of three different fractions: Kanamycin A, B, and C. Kanamycin A is the major component of the complex, and Kanamycin B (II) and C (III) are minor components.