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The equilibrium mixture of chloramphenicol-3-monosuccinate and its alternate form at neutral pH in aqueous solution was reexamined. The structure of the alternate form was shown by mass specxtrometry and NMR spectroscopy to be chloramphenicol-1-monosuccinate and not the cyclic hemi-ortho ester reported previously.
This paper describes novel methodology for teaching monetary skills to mentally retarded individuals. The goal of the methodology is to generate such skills with relatively little explicit training. To do so, the procedures were designed to produce emergent new behavior through stimulus class formation, exclusion, and matching of stimulus components. Three(More)
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