A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Formula: C11H19NO9, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 131-48-6, Name is N-Acetylneuraminic Acid, molecular formula is C11H19NO9. In an article, author is Kulinich, Andrii, V,once mentioned of 131-48-6.
The electronic structure of a series of benzo [cd] indole-based merocyanines and cationic polymethine dyes has been analyzed in both the ground and fluorescent states using the DFT and TD-DFT computations. The obtained data has shown the marked difference between the benzo[cd]indole dyes and those based on such typical heterocyclic cores as indole and benzimidazole. Namely, in the former, the frontier MOs have much greater coefficients at the end group(s), which leads to an enhancement of vibronic interactions in the long-wavelength absorption and fluorescence transitions. This effect seems to be the major cause of the low fluorescence lifetimes and fluorescence quantum yields of benzo[cd]indole dyes.
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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