Table 2.

MS-MS ions and collision energies of DEET and its oxidative metabolites^a,^b

Analyte		Precursor Ion (m/z)	Product Ion (m/z)	Collision Energy (V)
DEET	Native 1	192	91	42
	Native 2	192	119	26
	Internal Standard 1	202	91	42
	Internal Standard 2	202	119	26
DHMB	Native 1	208	135	26
	Native 2	208	89	42
	Internal Standard 1	218	135	26
	Internal Standard 2	218	89	42
DCBA	Native 1	222	149	27
	Native 2	222	121	38
	Internal Standard 1	232	149	27
	Internal Standard 2	232	121	38

^a1 and 2 are the quantification and confirmation ions, respectively.

^bThe internal standards are deuterium substituted compounds on the N-ethyl moiety.