Simultaneous Determination of Methamphetamine and Its Isomer N-Isopropylbenzylamine in Forensic Samples by Using a Modified LC-ESI-MS/MS Method

Table 5

Contents of MA and N-IBA in the suspected samples.

Sample ID	Quantity weighed (mg)	Contents of N-IBA (%)	Contents of MA (%)
SMU-1	54.7	80.4	7.31
SMU-2	54.0	74.5	0.21
SMU-3	54.7	75.4	Not detected
SMU-4	54.6	80.4	Not detected
SMU-5	55.0	0.5	Not detected
SMU-6	62.0	87.2	1.45
SMU-7	70.1	77.3	1.80
SMU-8	55.0	5.2	0.55