Table 2

Summary of molecular weights of molecules and fragment ions detected with LC/MS in feces extract of NOAC-treated mice collected between 8 and 24 h

	PoolsR_t^2-a	LC/MSR_t^2-b	Cone Voltage	Molecular Ions		Fragmentation Loss of Arabinose M′ = M − 132
	PoolsR_t^2-a	LC/MSR_t^2-b	Cone Voltage	[M + H]⁺	[2M + H]⁺	[M′ + H]⁺	[(M′ − H₂O) + H]⁺	[Cytosine + H]⁺
	min	min	V
NOAC	III (21–23)	33.1	+42	496.5	991.8	364.4^2-c
		33.1	+100	496.5	991.7	364.4		112.1
NOAC + OH	II (8–10)	32.2	+42	512.3		380.4	362.4
		32.1	+100	511.9			362.4	112.0
NOAC + OSO₃H	I (4–6)	28.0	+42	593.0
				[M − H]⁻	[2M − H]⁻	[M′ − H]⁻			HSO₄ ⁻	SO _3^−.
NOAC	III (21–23)	35.7	−42	494.5	989.9
		35.4	−100	494.5	989.8	362.4
NOAC + OH	II (8–10)	31.4	−42	510.5		378.9
			ND^2-d
NOAC + OSO₃H	I (4–6)	29.5	−42	590.5					97.0
		29.6	−100	590.5		458.4			97.0	80

↵2-a R_t of HPLC method a (for details see Materials and Methods) of feces extract purification.
↵2-b R_t of MS signal after passage through LC/MS system (method c).
↵2-c Strongest mass signals are indicated in italic letters.
↵2-d ND, Not determined.