FIELD: chemistry.
SUBSTANCE: described is a novel crystalline β-modification of 7-bromo-1,3-dihydro-5-(2-chlorophenyl)-2H-1,4-benzodiazepin-2-one (phenazepam) and synthesis method thereof, which can be used in pharmaceutical industry and medicine as a tranquilliser. Said novel crystalline β-modification of 7-bromo-1,3-dihydro-5-(2-chlorophenyl)-2H-1,4-benzodiazepin-2-one is characterised by certain interplanar spacing (A0) and corresponding intensity and parameters of the crystal lattice, given in the claims.
EFFECT: marked muscle relaxant, soporific, anticonvulsant and anxiolytic action.
2 cl, 7 ex, 2 tbl, 9 dwg
Authors
Dates
2011-09-27—Published
2010-03-17—Filed