Standard

Name	Formula	M.W.	Mode	Adduct	m/z detected	R.T.	Peak
Gallic acid	C7H6O5	170.0215	pos	[M+H]+	171.0265	8.35
Gallic acid	C7H6O5	170.0215	neg	[M-H]-	169.0128	8.32
Caffeic acid	C9H8O4	180.0423	pos	[M+H]+	181.0476	12.62
Caffeic acid	C9H8O4	180.0423	neg	[M-H]-	179.0341	12.59
3-(3,4-dihydroxyphenyl)propanoic acid (DPA)	C9H10O4	182.0579	pos	[M+H]+	183.0629	12.04
3-(3,4-dihydroxyphenyl)propanoic acid (DPA)	C9H10O4	182.0579	pos	[M-H2O+H]+	165.0523	12.04
3-(3,4-dihydroxyphenyl)propanoic acid (DPA)	C9H10O4	182.0579	neg	[M-H]-	181.0496	12.02
Caffeine	C8H10N4O2	194.0804	pos	[M+H]+	195.0856	11.91
Caffeine	C8H10N4O2	194.0804	neg				not detected
Cinchonine	C19H22N2O	294.1732	pos	[M+H]+	295.1795	11.95

Standard chemicals