| http://www.w3.org/ns/prov#value | - R1, in particular, is a straight or branched chain alkyl of 1 to 10 carbons, or particularly 3 to 7 carbons, e.g., n-pentyl, 1-, 2- or 3-methyl-n-butyl, 1- or 2-ethyl-n-butyl, n-hexyl, 1-, 2-, 3- or 4-methyl-n-pentyl, n-heptyl or n-octyl; a cycloalkyl of 3 to 8 carbons, more particularly 5 to 7 carbons, e.g., cyclohexyl; a cycloalkylalkyl of 4 to 12 carbons, e.g., cyclopropylethyl; an alkenyl or a
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