| http://www.w3.org/ns/prov#value | - The first amino acid may be coupled to the preferred chloromethyl resin by one of several base catalyzed processes wherein the triethylamine, tetramethylammonium or cesium (or similar) salt of the carboxylic acid is heated with the resin in a solvent such as ethanol, dioxane, dimethylformamide, and the like.
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