TABLE 1.

List of MRM transitions and electrospray source conditions.

Metabolite name	Retention time (min)	MRM transition	Collision energy (eV)	Polarity
Glycerophospho-N-Eicosapentaenoyl Ethanolamine	3.39	498.1 -> 423.9	32	ESI-
		498.1 -> 152.9	34
Glycerophospho-N-Arachidonoyl Ethanolamine	3.20	500.1 -> 425.9	28	ESI-
		500.1 -> 171.0	32
Glycerophospho-N-Palmitoyl Ethanolamine	4.49	452.2 -> 378.2	32	ESI-
		452.2 -> 171.0	38
Glycerophospho-N-Oleoyl Ethanolamine	5.36	478.2 -> 403.8	28	ESI-
		478.2 -> 171.0	32
Eicosapentaenoyl Ethanolamide	6.29	346.2 -> 267.3	16	ESI+
		346.2 -> 62.1	16
Eicosapentaenoyl Ethanolamide-d4	6.24	350.2 -> 285.3	12	ESI+
		350.2 -> 66.2	16
Docosahexaenoyl Ethanolamide	8.28	372.2 -> 311.2	12	ESI+
		372.2 -> 62.2	12
Docosahexaenoyl Ethanolamide-d4	8.22	376.2 -> 293.1	14	ESI+
		376.2 -> 66.2	16
Arachidonoyl Ethanolamide	8.37	348.2 -> 287.3	12	ESI+
		348.2 -> 62.2	16
Arachidonoyl Ethanolamide-d4	8.32	352.2 -> 203.3	16	ESI+
		352.2 -> 66.2	12
Palmitoyl Ethanolamide	9.59	300.1 -> 283.3	16	ESI+
		300.1 -> 62.2	17
Palmitoyl Ethanolamide-d4	9.51	304.1 -> 287.3	12	ESI+
		304.1 -> 62.2	17
2-Arachidonoyl Glycerol	10.39	379.2 -> 287.2	12	ESI+
		379.2 -> 269.1	18
2-Arachidonoyl Glycerol-d5	10.34	384.2 -> 287.2	16	ESI+
		384.2 -> 269.1	10
Oleoyl Ethanolamide	10.72	326.2 -> 309.3	22	ESI+
		326.2 -> 62.2	20
Oleoyl Ethanolamide-d4	10.65	330.2 -> 313.3	22	ESI+
		330.2 -> 66.2	22
Stearoyl Ethanolamide	13.00	328.2 -> 311.3	18	ESI+
		328.2 -> 62.2	16
Stearoyl Ethanolamide-d3	12.96	331.2 -> 314.3	18	ESI+
		331.2 -> 62.2	18