FIELD: pharmacology.
SUBSTANCE: invention concerns novel crystal (crystal form A) of compound of the formula (1): 
, containing 5 to 15% of water and demonstrates peak at relative intensity of over 25% and diffraction angle (2θ) of 30.16° by powder X-ray diffraction measured using CuK α-radiation. Additionally invention concerns method of obtaining crystal (crystal form A) from cl.1, method of obtaining therapeutic substance of crystal (crystal form A) from cl.1, and pharmaceutical composition.
EFFECT: obtaining novel bioactive compound showing HMG-CoA reductase inhibition effect.
4 cl, 1 ex, 1 tbl
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