TABLE 2

Fragmentation of the observed monomethylated, dimethylated, and trimethylated metabolites of procyanidin C1 in the APCI source

Compound Name	Position of Methyl Group	Quasi-Molecular Ion	Fragments after First Cleavage				Possible Additional Fragments after Second Cleavage	Number of Identified Isomers
Compound Name	Position of Methyl Group	Quasi-Molecular Ion	FU1	FU2 + 3	FU1 + 2	FU3	Possible Additional Fragments after Second Cleavage	Number of Identified Isomers
		m/z	m/z				m/z
Native C1		865	287	577	575	289
Monomethylated C1	FU1		301	577	589	289	287	1
	FU2	879	287	591	589	289	301	1
	FU3		287	591	575	303		1
Dimethylated C1	FU1 + 2		301	591	603	289		2
	FU2 + 3	893	287	605	589	303	301	2
	FU1 + 3		301	591	589	303	287	2
Trimethylated C1	FU1 + 2 + 3	907	301	605	603	303		4