Nimesulide 307 229 (Loss of SO2CH2) 229 (Loss of SO2CH2) 198 (Loss of SO2, NO2)
M1 323 245 (Loss of SO2CH2) 245 (Loss of SO2CH2) 243 (Loss of SO2CH4)
M3/5 335   255 (Loss of SO2CH4) 240 (Loss of H2NSO2CH3) 215
M6 231 152 (Loss of SO2CH3) 152 (Loss of SO2CH3) 122 (C6H4NO2-) 79 (CH3SO2-)
M7 278   198 (Loss of SO2CH3) 79 (CH3SO2-)
M8 455    
M9 403   323 (Loss of SO3) 230 (Loss of SO3, C3H5O)
M10 499   323 (Loss of gluc) 421 (Loss of SO2CH2) 359 (Loss of NO2, NHSO2CH3) 245 (Loss of gluc, SO2CH2) 230 (Loss of gluc, C3H5O)
M11 499    
M12 339 231  
M13 258 279 (Loss of SO3)  
M14 511    
M15 515 339 (Loss of gluc)  
M16 419   339 (Loss of SO3) 259 (Loss of SO2CH4)
M17 407 231 (Loss of gluc)  
M18 415    
Table 2: Molecular ions, fragment ions and daughter ions obtained from isolated metabolites. Radiolabelled components isolated from biological matrices.