Fig. 13.3.

Detection of novel lumisterol hdroxyderivatives in the human epidermis and serum

LC-MS spectra were measured on fractions with retention times corresponding to either of the hydroxyderivatives listed that were pre-purified on a Waters C18 column as described in [202]. Arrows indicate the retention times of the corresponding standards. Inserts show the mass spectra corresponding to the retention time of the detected compound. The work is reprinted from [202] under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/) with small modifications