Table 7.

List of MRM transitions (m/z) used for method 2 on API4000 QTrap.

Compound	MRM Transitions (m/z)
MTX1	1689.8 > 1689.6	[M-2H]2−/[M-2H]2−
	1689.8 > 96.9	[M-2H]2−/[HOSO3]2−
	1126.2 > 1126.2	[M-3H]3−/[M-3H]3−
	1126.2 > 96.9	[M-3H]3−/[HOSO3]3−
MTX2	1637.5 > 1637.5	[M-2H]2−/[M-2H]2−
	1637.5 > 96.9	[M-2H]2−/[HOSO3]2−
	1091.5 > 1091.5	[M-3H]3−/[M-3H]3−
	1091.5 > 96.9	[M-3H]3−/[HOSO3]3−
MTX4	1646.2 > 1646.2	[M-2H]2−/[M-2H]2−
	1646.2 > 96.9	[M-2H]2−/[HOSO3]2−
Gambierone	1023.5 > 1023.5	[M-H]−/[M-H] −
	1023.5 > 96.9	[M-H]−/[HOSO3]−
44-methylgambierone	1037.6 > 1037.6	[M-H]−/[M-H]−
	1037.6 > 96.9	[M-H]−/[HOSO3]−