FIELD: chemistry.
SUBSTANCE: present invention relates to four crystalline forms of (crystalline forms A, B, C and D) 5α-androstane-3β,5,6β-triol (YC-6) and to methods of their production.
EFFECT: said crystalline forms have better stability compared to existing forms, contain a smaller amount of impurities and are safer.
10 cl, 12 dwg, 15 ex
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