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Table 1 Characteristics of putative flavonoids by UPLC-ESI-QTOF-MS

From: Biosynthesis of the active compounds of Isatis indigoticabased on transcriptome sequencing and metabolites profiling

Formula

Retention time (min)

m/z(Positive)

m/z(Negative)

Putative flavonoids

C21H20O11

5.8

449.108 [M + H]+

447.096 [M-H]-

kaempferol-3-O-glucoside

C27H30O14

5.74

/

623.164 [M + HCOO]-

kaempferol-3-O-rhamnoside-7-O-rhamnoside

C27H30O15

4.93

595.166 [M + H]+

593.154 [M-H]-

kaempferol-3-O-rhamnoside-7-O-glucoside

C27H30O15

5.51

595.166 [M + H]+

593.154 [M-H]-

quercetin-3-O-rhamnoside-7-O-rhamnoside

C27H30O16

5.11

611.16 [M + H]+

609.148 [M-H]-

quercetin-3-O-glucoside-7-O-rhamnoside

C27H30O16

4.9

611.16 [M + H]+

609.148 [M-H]-

quercetin-3-O-rhamnoside-7-O-glucoside