Table 4.

Mass spectra of the detected peaks of trimethylsilylated HMSA (relative abundances in %)

peak	tR (min)	m/z
		286	271	257	243	196	169	153	147	143	133	111	93	77	75	73
1a	19.07	4	10	33	n.d.	n.d.	21	5	11	16	2	4	15	100	72	85
1b	19.39	1	16	21	2	2	18	2	48	33	5	3	5	30	56	100
1c	19.95	1	29	10	6	6	66	16	29	13	3	3	7	45	59	100
1d	20.11	n.d.	15	13	5	9	99	12	27	9	7	5	10	32	47	100
1e	20.73	n.d.	33	5	4	4	39	14	21	28	4	3	7	26	43	100