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. 1998 Sep;118(1):285–296. doi: 10.1104/pp.118.1.285

Table I.

Tabulated FAB spectra of methylated IAA metabolites

Compound [MH]+ Other Ions
Metabolite 1 354/360 (5) 192/198 (Bp), 146/152 (33), 134/140 (31)
Metabolite 2 206/212 (Bp) 174/180 (10), 146/152 (32)
Metabolite 3 319/325 (55) 162 (25), 130/136 (Bp)
Metabolite 4 333/339 (81) 205 (35), 176 (23), 130/136 (Bp), 116 (9)
Metabolite 5 206/212 (Bp) 174/180 (5), 146/152 (30)
Metabolite 6 335/341 (Bp) 174/180 (14), 162 (30), 146/152 (37), 130/136 (25), 130/132 (21), 102 (21)
Metabolite 7 335/341 (Bp) 174/180 (14), 162 (24), 146/152 (36), 130/136 (17), 130/132 (19), 102 (15)
Metabolite 8 335/341 (Bp) 204 (23), 174/180 (14), 162 (46), 146/152 (42), 102 (43)
Metabolite 9 335/341 (Bp) 204 (26), 174/180 (8), 162 (44), 146/152 (38), 102 (36)

The intensity of nonlabeled peaks are shown in parentheses, the intensity of the 13C6 label from the IAA feed is of approximately equal intensity as that of nonlabeled ions. Bp, Base peak with relative intensity 100%. All spectra also contain an adduct ion [M + glycerol + H]+ with an intensity of 2% to 10%; these are not tabulated.