abstract |
A single morphic form of a compound selected from 2S- [4- (2, 5 -dioxopyrrolidin- 1-yl)- 2S- mercaptobutyrylamino] -4- methylpentanoic acid (2,2- dimethyl- 1S- methylcarbamoylpropyl) amide and 2S- [2$I(S)mercapto- 4-(3, 4, 4- trimethyl- 2, 5- dioxoimidazolidin- 1-yl) butyrylamino] -4- methylpentanoic acid (2, 2-dimethyl -1S- methylcarbamoylpropyl) amide, isolable as such. |