A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 157115-85-0, Name is Noopept, molecular formula is C17H22N2O4. In an article, author is Sukhodola, A. A.,once mentioned of 157115-85-0, Formula: https://www.ambeed.com/products/157115-85-0.html.
Excitation-wavelength dependence of the luminescence spectra indole solution in ethanol at 77 K was measured. It was found that the ratio of the intensities of phosphorescence and fluorescence decreases at the red edge excitation. This decreasing is associated with a decrease in the ratio of the quantum yields of intersystem crossing and fluorescence phi(isc)/phi(fl). Because of for the indole solution in ethanol at 77 K both singlet pi pi* states of L-1(a) and L-1(b) are fluorescent, this result is explicated by increasing the contribution the L-1(a) state to the processes of radiation and intersystem crossing at the red edge excitation.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles