Table 7 a Forced Degradation results of working standard. b Forced Degradation results of Impurities
Degradation condition | Sample ID | HCB | ||
|---|---|---|---|---|
% Assay | Peak purity | % Degradation | ||
a | ||||
Control | Working standard | 100.6 | 1.000 | NA |
Acid degradation | Working standard | 98.9 | 1.000 | 2 |
Base degradation | Working standard | 89.7 | 1.000 | 11 |
Peroxide degradation | Working standard | 99.3 | 1.000 | 1 |
UV (Photolytic) | Working standard | 83.0 | 1.000 | 18 |
Thermal degradation | Working standard | 100.5 | 1.000 | 0 |
Sample | % Related compounds | |||||
|---|---|---|---|---|---|---|
HC | HCB-21 | HC- 17,21- Methyl ortho butyrate | HC 3- methyl enol ether 17-butyrate | % Unknown max | % Total impurities | |
b | ||||||
Control | 0.11 | 0.39 | ND | ND | 0.07 | 0.63 |
Acid | 0.12 | 1.07 | ND | ND | 0.11 | 1.41 |
Base | 1.21 | 8.23 | ND | ND | 0.09 | 9.64 |
Peroxide | 0.10 | 0.42 | ND | ND | 0.05 | 0.62 |
UV | 0.08 | 0.42 | ND | ND | 0.12 | 0.85 |
Heat | 0.09 | 0.45 | ND | ND | 0.06 | 0.70 |