Characters Reddish violet crystalline powder
Identification IR/HPLC
N-isobutylpiperidone ≤ 0.5%
Chromatographic purity
Individual impurity with RT around0.5/0.6/0.8/1.4 ≤ 1.0%

Any other impurity  ≤ 0.5%
The sum of all impurities ≤ 3.0%
Water ≤ 2.5%
Assay 950μg/mg-1020μg/mg
Residual organic solvents

Tetrahydrofurane ≤ 720ppm
Methylene chloride  ≤ 600ppm
Hexane ≤ 290ppm
Microbiological As per USP30