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33747884246
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MDL Crossfire Beilstein Database (see the Supporting Information for details)
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MDL Crossfire Beilstein Database (see the Supporting Information for details).
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5
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33747873298
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note
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Stoichiometry and reaction yields were not considered as they were reported for only a few percent of database entries.
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6
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0004190197
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7
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33747881585
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note
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Note the importance of directed connections; an undirected network would have no chemical meaning, and the core (that is, the giant SCC) could not be defined.
-
-
-
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8
-
-
33747871355
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-
note
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With the most permissive all-to-all scheme, the percentage is 80%; with the 20-% mixed scheme it is 70%.
-
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-
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10
-
-
33747872314
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note
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We stress that this is true only in a statistical sense, and that ingenious counterexamples can be found where only one synthetic step changes the molecular skeleton extensively (see the elegant tandem and domino reactions shown in the Supporting Information).
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11
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33747879394
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March 7, 2005 chemical prices, Chemical Market Reporter, http://www.chemicalmarketreporter.com.
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33747884479
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This fact was verified by cross-checking other literature sources including ChemAbstract and SciFinder.
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5744249209
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21
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33747885215
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note
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Inclusion in the "optimal" set is based on the usefulness alone and does not take into account the chemical diversity among the chosen molecules; it is thus possible that some similar chemicals are included (see the Supporting Information). We suggest that for practical/industrial applications, the optimal sets of a few hundred molecules obtained from the usefulness analysis might be further scrutinized for chemical diversity. Alternatively, the usefulness function itself could be modified to simultaneously maximize both the usefulness and the diversity. Such a procedure, however, would be significantly more time-consuming as it would require the analysis of structural details of all molecules in the network.
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22
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