FIELD: chemistry.
SUBSTANCE: invention relates to agomelatine and sulfonic acid complexes of formula (I), where x is 0 or 1 and RSO3H is 1,5-naphthalenedisulfonic acid or benzenesulfonic acid, which have good solubility and stability and can be used to treat disorders of the melatonergic system. 
.
EFFECT: invention also relates to methods for producing said complexes and a pharmaceutical composition containing them.
14 cl, 6 dwg, 5 tbl, 5 ex
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