نتایج جستجو برای: methylpyrrole
تعداد نتایج: 138 فیلتر نتایج به سال:
The torsional constant (F) is a parameter extracted from spectroscopic analyses of molecules possessing methyl group. Its value depends primarily on the structure. Widely varying F values have been reported for substituted toluenes in their ground electronic state, first excited singlet state or cation. Conventionally, this variability assumed to indicate significant changes structure with subs...
N-Methylpyrrole (Py)-N-methylimidazole (Im) polyamides are organic molecules that can recognize predetermined DNA sequences in a sequence-specific manner. Human telomeres contain regions of (TTAGGG)n repetitive nucleotide sequences at each end of chromosomes, and these regions protect the chromosome from deterioration or from fusion with neighboring chromosomes. The telomeres are disposable buf...
nvestigations of the town ant, Atra texnnu (Buckley), revealed the structures of its alarm pheromones (Moser et ul., 1968) and one of its trail-following pheromones (Tumlinson el n/., 1971 ; Wood er a/., 1970). This ant is a pest of pine plantations and farm crops (Moser, 1962); hence chemicals which control its social behavior are of great concern. We have prepared a number of analogs of the t...
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