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Table 2 The compounds identified in incubation solutions at 0 min (M0) and 60 min (M1), respectively

From: Characterization of major metabolites of polymethoxylated flavonoids in Pericarpium Citri Reticulatae using liver microsomes immobilized on magnetic nanoparticles coupled with UPLC/MS–MS

Peaks

t R (min)

M0 [M+H]+

M1 [M+H]+

MS2

Identification

1

2.59

375

345

Di hydroxy tetramethoxyflavone

2

2.63

375

345

Di hydroxy tetramethoxyflavone

3

2.81

375

345, 331, 301

3′,4′-di hydroxy-5,6,7,8- tetramethoxy-flavone

4

3.16

389

359, 374, 341

6-hydroxy-5,7,8,3′,4′-pentamethoxy-flavone or 7-hydroxy-5,6,8,3′,4′-pentame-thoxyflavone

6

3.25

359

329

4′-hydroxy-5,6,7,8- tetramethoxyflavone

7

3.33

389

389

359, 374, 341

4′-hydroxy - 5,6,7,8,3′-pentamethoxyfla-vone or 3′-hydroxy- 5,6,7,8,4′-pentame-thoxyflavone

8

3.53

373

373

343, 312

Pentamethoxyflavone

9

3.60

359

359

329

Monohydroxy-tetramethoxyflavone

10

3.88

403

403

373

Nobiletin

11

4.25

373

373

343, 325

Tangeritin

12

4.53

389

389

359, 341, 374

Monohydryoxy- pentamethoxyflavone