Can DMF or DMSO be used for dissolving non-sulfo crosslinkers? Can my resuspended reagent be used just one time or several times after opening?

Both solvents can be used but either needs to be anhydrous for long-term stability of non-sulfo linkers in solution. Many biology labs have DMSO, but not DMF, so they can use their own DMSO, but cannot store the solution for further use.