| http://www.w3.org/ns/prov#value | - These compounds have the formula: In the structure named above each R1 is a C1-C6alkyl or hydroxyalkyl group, R3 is C11-C21 hydrocarbyl group, n is 2 to 4 and X??? is a suitable anion, such as an halide (e.g., chloride or bromide) or methyl sulfate.
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