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Rf of rosmarinic acid (RA) standard and RA isolated from methanolic extract of peppermint leaves in thin-layer chromatography
| Solvent system | Rf value of RA standard | Rf value of RA in peppermint |
|---|---|---|
| Chloroform:ethyl acetate: formic acid (5:4:1) | 0.34 | 0.32 |
