21. The exact reaction mechanism is unknown but there is evidence suggesting an intramolecular reaction. 22. In 1974 Casey was the first to implement carbenes into the metathesis reaction mechanism : 23. The system of stoichiometric equations of elementary reactions is the " reaction mechanism ". 24. Support for the reaction mechanism is based on isotope labeling. 25. Both 3-Dehydroquinate and 3-Dehydroshikimate are intermediates in the reaction mechanism . 26. Different mathematical forms are possible depending on the reaction mechanism . 27. The reaction mechanism of the Ullmann reaction is extensively studied. 28. He explored in great detail the reaction mechanism of reaction between hydrogen and chlorine. 29. Through reaction mechanisms , FAD is able to contribute to chemical activities within biological systems. 30. The reaction mechanisms are more complicated than this simple scenario.
