FIELD: pharmaceuticals.
SUBSTANCE: invention relates to a method of producing a pharmaceutically acceptable salt of formula (I). The method is performed by dissolving a salt of formula (II) in a solvent to obtain a solution and adding hydrogen chloride to the solution to obtain a compound of formula (I).
(I)
(II)
EFFECT: production of (2S,3R)-3-((2-aminopyridin-4-yl)methyl)-1-(((R)-1-cyclohexylethyl)carbamoyl)-4-oxoazetidin-2-carboxylic acid hydrochloride.
24 cl, 12 tbl, 12 dwg, 5 ex
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