| http://www.w3.org/ns/prov#value | - ionally used is selected from the group like hydrocarbons like n-hexane, n-heptane, toluene, xylene, halogenated solvents like methylene chloride, ethylene dichloride, chloroform, dichlorobenzene, esters like ethyl acetate, isopropyl acetate, aprotic polar solvents such as dimethyl formamide (DMF), dimethyl sulfoxide (DMSO), acetonitrile or mixtures thereof, preferably dimethyl sulfoxide (DMSO). 2
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