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Table 5 LC-ESI-MS/MS analysis of photo-degradation mixture of glycyrrhetic acid

From: Stress degradation studies and stability-indicating TLC-densitometric method of glycyrrhetic acid

Peak

Rt (min)

Proposed formula

Observed mass

Calculated mass

Error (ppm)

Characteristic MS/MS fragment ions

Peak 1

1.687

C30H45O5

485.3263

485.3261

0.3601

467, 449, 431, 421,403, 385, 259, 233, 187

Peak 2

2.142

C30H47O5

487.3450

487.3423

5.4374

451,423,405,387, 317, 271,235,189,175

Glycyrrhetic acid ( Peak 3)

2.531

C30H47O4

471.3488

471.3468

4.0588

453, 425, 407, 389, 317, 271, 263, 235, 217, 189, 149

Peak 4

2.916

C30H49O3

457.3636

457.3676

−8.7945

439, 411, 393, 343, 249, 203, 191