The present invention relates to the use of an R-enantiomer of a compound according to the following formula (I) (I), wherein R1 or R2 is a group selected from H, -CH3, -CH2CH3, -CH2CH2CH3, and -CH2CH2CH2CH3 or can be taken together with another to give a cyclopropyl ring, a cyclobutyl ring, a cyclopentyl ring, or a cyclohexyl ring, R3 is a group selected from -COOH, -COOR6, -CONH2, -CONHR6, -CONR6R7, -CONHSO2R6, -COO-(CH2)3-CH2OH, -COO-(CH2)4-ONO2, -COO-PhOCH3-C2H2-COO-(CH2)4-ONO2, tetrazolyl, and a -COOH bioisostere, R4 or R5 is a group selected from -Cl, -F, -Br, -I, -CF3, -OCF3, -SCF3, -OCH3, -OCH2CH3, -CN, -CH=CH2, -CH2OH, and -NO2, R6 of R7 is a group selected from -CH3, -CH2CH3, -CH2CH2CH3, and -CH2CH2CH2CH3, and m or n is an integer selected from 0, 1, 2, and 3, or a nitro-variant of said compound, and pharmaceutically acceptable salts of said compound, preferably Tarenflurbil (R-Flurbiprofen), for use in the treatment of multiple sclerosis (MS).
