نتایج جستجو برای: benzaldehyde
تعداد نتایج: 2116 فیلتر نتایج به سال:
Thanks to the well-recognized role of benzaldehyde in industry, nowadays research new and sustainable approaches selectively synthesize such an interesting product is receiving great attention from chemists’ community. In this paper, a V-based catalytic biphasic system adopted perform toluene oxidation benzaldehyde. Importantly, pursue sustainability, organic solvents have been avoided, so used...
Benzaldehyde, in the form of 4,6-benzylidene-alpha-D-glucose (BG), was given iv at a daily dose of 720-1800 mg/m2 to 65 patients with inoperable carcinoma in the advanced stages. The overall objective response rate was 55%; seven patients achieved complete response, 29 achieved partial response, 24 remained stable, and five showed progressive disease. Response was seen in various cell types. Pr...
Benzaldehyde lyase from Pseudomonas fluorescens Biovar I. (BAL, EC 4.1.2.38) is a versatile catalyst for the organic synthesis of chiral α-hydroxy ketones. To allow fast assessment of enzyme activity, a direct spectrophotometric assay is desirable. Here, a new robust and easy-to-handle assay based on UV absorption is presented. The assay developed is based on the ligation of the α-hydroxy keton...
In the title mol-ecule, C10H8O2, all non-H atoms are essentailly coplanar (r.m.s. deviation = 0.0192 Å), indicating an effective conjugation of the carbonyl group, the benzene ring and the lone pair of the propyn-yloxy O atom. In the crystal, π-π stacking inter-actions [centroid-centroid distance = 3.5585 (15) Å] connect mol-ecules into inversion dimers which are linked by Csp-H⋯O=C hydrogen bo...
In the title compound, C(15)H(13)NO(5), the vanillin group makes a dihedral angle of 4.95 (8)° with the benzene ring of the nitro-benzene group. The packing is stabilized by weak, non-classical inter-molecular C-H⋯O inter-actions which link mol-ecules into chains running along the c axis.
Significant changes in aldehyde dehydrogenase (ALDH) activity occur during chemically induced rat hepatocarcinogenesis. We have developed a procedure for the histochemical localization of hepatic ALDH which has proven extremely useful as an additional probe for studying changes in this enzyme during hepatocarcinogenesis. Frozen sections of fresh tissue were stained for ALDH using either propion...
The effects of toluene on lipid peroxidation and rates of reactive oxygen species (ROS) formation have been studied in isolated systems and in vivo. The induction of reactive oxygen species was assayed using the probe 2',7'-dichlorofluorescin diacetate (DCFH-DA). Toluene exposure (1 g/kg, 1 hr, i.p.) did not stimulate cortical lipid peroxidation as evaluated by measurement of conjugated dienes....
Since the permittivity signal of a cell suspension measured using dielectric spectroscopy at radio frequencies is essentially determined only by viable (intact) cells, it can be used to monitor the concentration of viable cells in a fermentor in which a large proportion of the cells is nonviable. This could be used to select for organisms that are highly resistant to stress, for example from to...
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