abstract |
Provided are crystalline forms of (S)-2,6-diamino-4,5,6,7-tetrahydrobenzothiazole monotartrate (DIAT), including DIAT form I, DIAT form II, and DIAT form III. Also provided are methods for preparing DIAT form I, DIAT form II, and DIAT form III, and methods for preparing pramipexole therewith. |