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Table 2 Additional compounds identified in Melissa officinalis dichloromethane leaf extracts by HPLC-ESI-MS in negative ion mode

From: Cytotoxic activity of Moroccan Melissa officinalis leaf extracts and HPLC-ESI-MS analysis of its phytoconstituents

Peak no.

Rt (min)

Phenolic compound

UV-Vis maxima (nm)

[M-H]-

[2M-H]-

XIII

17.31

o-tyrosol

280, 310

137.0

275.2

XIV

22.41

methyl hydroxyphenyl acetic acid

278

181.2

363.0

XV

36.99

cis-rosmarinic acid

220, 280, 325

359.1

719.2

  1. Rt retention time