FIELD: chemistry.
SUBSTANCE: invention relates to a crystalline form of a thiophene derivative selected from form C and E. Crystalline form C of the compound of formula (I) is characterized by a powder X-ray diffraction pattern containing characteristic diffraction peaks at the following values of angle 2θ: 13.20 ± 0.20°, 15.26 ± 0.20°, 18.08 ± 0.20°, 21.99 ± 0.20°, 25.07 ± 0.20°, 25.38 ± 0.20°, 26.66 ± 0.20°, 30.70 ± 0.20°. Crystalline form E of the compound of formula (I) is characterized by a powder X-ray diffraction pattern containing characteristic diffraction peaks at the following angle values 2θ: 9.11 ± 0.20°, 12.43 ± 0.20°, 13.28 ± 0.20°, 15.34 ± 0.20°, 18.16 ± 0.20°, 22.06 ± 0.20°, 23.15 ± 0.20°, 25.14 ± 0.20°.
EFFECT: crystalline forms C and E of the thiophene derivative of formula (I) for preparing a medicinal product for treating gout and hyperuricemia.
18 cl, 14 dwg, 15 tbl, 14 ex
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