نتایج جستجو برای: 10 anthraquinone
تعداد نتایج: 1018042 فیلتر نتایج به سال:
the aqueous electrochemistry of a number of anthraquinone derivatives was studied by using cyclic voltammetry at the surface of carbon paste electrode (cpe). from measurements of the half-wave potential as a function of ph, the potential - ph diagrams were constructed for each compound. the values of formal potentials and the pk'a of some different redox and acid-base couples involved in each c...
In the course of screening rhizosphere microflora of Sonoran desert plants for potential anticancer agents1,2), an unidentified Penicillium sp. (Trichonaceae) isolated from the rhizosphere of the apache plume (Fallugia paradoxa D. Don; Rosaceae) was found to produce several cytotoxic substances. Fractionation of the cytotoxic EtOAc extract led to the isolation of a new anthraquinone (1), a know...
The reaction of 1-amino-anthraquinone with 7,7',8,8'-tetra-cyano-quinodimethane yielded the title charge-transfer complex, C(14)H(9)NO(2)·C(12)H(4)N(4). The mol-ecules have maximum deviations from the mean planes through the non-H atoms of 0.0769 (14) Å for an oxo O atom and 0.1175 (17) Å for a cyano N atom, respectively. The dihedral angle between the two planes is 3.55 (3)°. In the crystal, m...
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