FIELD: chemistry.
SUBSTANCE: invention relates to organic chemistry, particularly to pseudopolymorphic forms 'A' and 'E', polymorphic forms 'B' and 'D' of a sodium salt of (1R,2S,5R)-7-oxo-6-sulphooxy-1,6-diazabicyclo[3.2.1]octane-2-carboxamide.
EFFECT: obtaining pseudopolymorphic and polymorphic forms of a sodium salt of (1R,2S,5R)-7-oxo-6-sulphooxy-1,6-diazabicyclo[3,2,1]octane-2-carboxamide, characterised by high stability in ambient conditions (at different temperatures and humidity), which can be used as a medicinal agent, particularly a β-lactamase inhibitor.
12 cl, 13 dwg, 12 ex
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