HPLC-MS-MS separation could be achieved in 18 min. Retention time (RT), molecular
weight (MW), precursor ion (PI), Limit of detection (LOD) and diagnostic ions are summarized in
Table 51. The linearity, precision, LOQ and recovery of the method were r2 > 0.9837 and % RSDs <
16, LOQ < 5 ppb and %R were in the range of 104-120.88, respectively.