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49
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5cm was isolated as the free acid. For enzymatic studies 50 μL of a THF solution of 5cm-free acid was added to the aqueous buffer containing the β-lactamase enzyme (see Experimental Section).
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Enzyme inactivation was found to be time dependent. An incubation time of 10 min proved to be convenient. The partition number, when evaluated in this way, can vary with the incubation time used: see ref 3e.
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a of the N-conjugate acid of a closely related structure is 5.14: see ref 19.
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In all cases no recovery of enzyme activity was detected after up to 19 h.
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In all cases no recovery of enzyme activity was detected after up to 19 h.
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33847455827
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This is a modification of the procedure reported in ref 50.
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