| prov:value
| - R may then be an aliphatic radical such as the alkyl radicals methyl, ethyl, propyl, butyl and amyl; omegachloroamyl, 2-ethyl hexyl, cycloaliphatic radicals, e.g., cyclohexyl, methyl cyclohexyl; capryl, lauryl, oleyl, aralkyl radicals, e.g., phenyl ethyl, parachlorophenyl ethyl, tertiary butyl phenyl ethyl, alkaryl radicals, e.g., tertiary Butyl phenyl, cresyl, naphthyl, xylyl, p-chlorophenyl, ri
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