FIELD: chemistry.
SUBSTANCE: invention relates to crystalline form of E ertapenem sodium, and to a method for preparing crystalline form of E ertapenem sodium, characterised by using an aqueous solution of sodium ertapenem at low concentration as a starting material.
EFFECT: crystalline form of E can be easily filtered and dried, drying properties are unchanged, and purity of crystals is high and can reach up to 98, 5 % or more.
12 cl, 1 dwg, 5 tbl, 8 ex
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