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