| COPD | Chronic obstructive pulmonary disease |
| HPLC | High performance liquid chromatography |
| ISO | Isorhapontigenin |
| LC-MS/MS | Liquid chromatography–tandem mass spectrometry |
| LLOQ | Lower limit of quantification |
| QC | Quality control |
| RES | Resveratrol |
| RSD | Relative standard deviation |
| R2 | Correlation coefficient |
| UV | Ultraviolet |
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