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Showing 1-28 of 28 results for "40669" within Papers
Johanna Bråred Christensson et al.
Contact dermatitis, 55(4), 230-237 (2006-09-09)
Concomitant positive reactions to colophonium, oxidized limonene, and/or oxidized linalool are recorded in patch test studies. The main allergens in these patch test mixtures are hydroperoxides, which form antigens by a radical pathway. Theoretically, concomitant reactions can be explained not
Z S Agadjanyan et al.
Molecular and cellular biochemistry, 289(1-2), 49-53 (2006-04-04)
Malondialdehyde (MDA) is one of cytotoxic aldehydes produced in cells as a result of lipid peroxidation and further MDA metabolism in cytoplasm is not known. In our experiments the liver fraction 10,000 g containing phosphoglucose isomerase and enzymes of the
C Holvoet et al.
Die Pharmazie, 62(2), 126-132 (2007-03-08)
Paclitaxel, an antitumoral drug, is poorly soluble in aqueous media. Therefore, in a commercialised formulation (Taxol), paclitaxel (30 mg active compound) is dissolved in polyethoxylated castor oil (Cremophor EL) and ethanol. After dilution of Taxol in aqueous media paclitaxel tends
Oramas Suttinun et al.
Applied and environmental microbiology, 76(14), 4684-4690 (2010-05-18)
The cometabolic degradation of trichloroethene (TCE) by Rhodococcus sp. L4 was limited by the loss of enzyme activity during TCE transformation. This problem was overcome by repeated addition of inducing substrates, such as cumene, limonene, or cumin aldehyde, to the
Ryutaro Souda
The Journal of chemical physics, 133(21), 214704-214704 (2010-12-15)
Mobility of molecules in confined geometry has been studied extensively, but the origins of finite size effects on reduction of the glass transition temperature, T(g), are controversial especially for supported thin films. We investigate uptake of probe molecules in vapor-deposited
V I Lushchak et al.
Ukrains'kyi biokhimichnyi zhurnal (1999 ), 78(6), 113-120 (2007-05-15)
Two methods of the determination of lipid peroxidation products have been compared which are based on Fe(II) oxidation by them at acid pH values in the presence of xylenol orange which binds Fe(III) have been compared. The first method uses
Eric D Nelson et al.
Journal of pharmaceutical sciences, 98(3), 959-969 (2008-07-16)
Solvent effects on the AIBN and ACVA forced degradation of cumene are explored. The degradant formation rates of the three cumene oxidative degradants, cumene hydroperoxide, acetophenone, and 2-phenyl-2-propanol are reported. The relative abundance and ratios of these three degradants provide
National Toxicology Program technical report series, (542)(542), 1-200 (2009-04-03)
Cumene occurs naturally in petroleum and is used as a solvent, in gasoline and diesel fuels, and as the principal chemical in the production of phenol and acetone. We studied cumene to determine if it caused cancer in rats or
Mathieu Frenette et al.
Journal of the American Chemical Society, 128(51), 16432-16433 (2006-12-21)
A new class of thermally activated chain-breaking antioxidants is presented. Dimers of persistent carbon-centered radicals are able to inhibit the autoxidation of cumene and styrene with better rate constants than the commercial antioxidant Irganox HP-136 and 3,5-di-tert-butyl-4-hydroxyanisole. A dramatic increase
Hue-Hua L Hong et al.
Toxicologic pathology, 36(5), 720-726 (2008-07-24)
The incidences of alveolar/bronchiolar adenomas and carcinomas in cumene-treated B6C3F1 mice were significantly greater than those of the control animals. We evaluated these lung neoplasms for point mutations in the K-ras and p53 genes that are often mutated in humans.
Handbook of Environmental Fate and Exposure Data For Organic Chemicals, 5 (1997)
A Getsoian et al.
International journal of pharmaceutics, 348(1-2), 3-9 (2007-10-20)
To emphasize the fact that solvents can be either critical or immaterial in crystallizing specific polymorphs, a method for obtaining multiple polymorphs of a compound using only one solvent is demonstrated. By varying the crystallization temperature and level of supersaturation
Youji Okada et al.
Organic & biomolecular chemistry, 4(22), 4113-4117 (2007-02-23)
We have undertaken a detailed study of the antioxidant activity of allicin, one of the main thiosulfinates in garlic, in order to obtain quantitative information on it as a chain-breaking antioxidant. The antioxidant actions of allicin against the oxidation of
So-Young Jun et al.
Biochimica et biophysica acta, 1764(7), 1159-1166 (2006-07-18)
The meta-cleavage product hydrolase from Pseudomonas fluorescens IP01 (CumD) hydrolyzes 2-hydroxy-6-oxo-7-methylocta-2,4-dienoate (6-isopropyl HODA) in the cumene (isopropylbenzene) degradation pathway. To modulate the substrate specificity and catalytic efficiency of CumD toward substrates derived from monocyclic aromatic compounds, we constructed the CumD
Handbook of Environmental Fate and Exposure Data For Organic Chemicals, 5 (1997)
Ling-Jen Chen et al.
Drug metabolism and disposition: the biological fate of chemicals, 39(3), 498-509 (2010-11-26)
Cumene is a high-production volume chemical that has been shown to be a central nervous system depressant and has been implicated as a long-term exposure carcinogen in experimental animals. The absorption, distribution, metabolism, and excretion of [(14)C]cumene (isopropylbenzene) was studied
Riccardo Amorati et al.
Organic & biomolecular chemistry, 6(6), 1103-1107 (2008-03-11)
The chain-breaking antioxidant activities of two garlic-derived allyl sulfides, i.e. diallyl disulfide (1), the main component of steam-distilled garlic oil, and allyl methyl sulfide (3) were evaluated by studying the thermally initiated autoxidation of cumene or styrene in their presence.
Youji Okada et al.
Organic & biomolecular chemistry, 6(6), 1097-1102 (2008-03-11)
The antioxidant effects of the new thiosulfinate derivative, S-benzyl phenylmethanethiosulfinate (BPT), against the oxidation of cumene and methyl linoleate (ML) in chlorobenzene were studied in detail using HPLC. The results showed that BPT provided effective inhibition with a well-defined induction
Federal register, 77(36), 10754-10755 (2012-03-03)
The Food and Drug Administration (FDA) is announcing the availability of a final recommendation for the revision of the permitted daily exposure (PDE) for the solvent cumene according to the maintenance procedures for the guidance for industry entitled ``Q3C Impurities:
A I Fishman et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 71(3), 1128-1133 (2008-04-29)
Infrared spectra (4,000-400 cm(-1)) and Raman spectra (1,700-40 cm(-1)) of the liquid and two crystalline solids of isopropylbenzene (cumene) and isopropylbenzene-d(12) have been recorded. The spectra indicate that in the liquid and crystalline solids isopropylbenzene exists in planar conformation only
Ilaria Di Somma et al.
Journal of hazardous materials, 187(1-3), 157-163 (2011-02-01)
Dicumylperoxide (DCP) is one of the most used peroxides in the polymer industry. It has been reported that its thermal decomposition can result in runaway phenomena and thermal explosions with significant economic losses and injuries to people. In the present
Jean-Marc Aldric et al.
Applied biochemistry and biotechnology, 153(1-3), 67-79 (2009-01-22)
A two-phase partitioning bioreactor to treat gas effluents polluted by volatile organic compound has been developed. In this work, both the mass transfer of isopropylbenzene (IPB) and oxygen have been considered in relation to their influence on the hydrodynamics of
D A Guseva et al.
Biomeditsinskaia khimiia, 56(3), 342-350 (2010-08-11)
Antioxidant activity and the oxidative stability were investigated in flax, sesame, silybum oils and oils with different omega-6/omega-3 fatty acid ratio. The content of antioxidants (AO) in crude oils and their reactivity towards peroxyl radicals were studied using kinetic method
B Martín-García et al.
Langmuir : the ACS journal of surfaces and colloids, 26(18), 14556-14562 (2010-08-28)
We report the study of the equilibrium and dynamic properties of Langmuir monolayers of poly(styrene-co-maleic anhydride) partial 2-buthoxyethyl ester cumene terminated polymer and the effect of the Mg(NO(3))(2) addition in the water subphase on the film properties. Results show that
Handbook of Environmental Fate and Exposure Data For Organic Chemicals, 5 (1997)
Sibylle Schliemann et al.
Contact dermatitis, 65(2), 107-114 (2011-06-23)
Neurosensory irritation is a subjective phenomenon induced by a number of chemicals. Objectives. To investigate the sensory irritation induced by two organic solvents - n-octane and cumene - between two groups of volunteers, stingers and non-stingers, identified as such according
Sibylle Schliemann et al.
Contact dermatitis, 63(6), 347-356 (2010-11-03)
Skin exposure to lipophilic irritants at workplaces is a risk factor for the development of occupational irritant hand dermatitis. Suitable lipophilic model irritants to be used in repeated irritation studies in volunteers are needed to gain a better understanding of
Nobuko Wakamatsu et al.
Toxicologic pathology, 36(5), 743-752 (2008-07-24)
National Toxicology Program (NTP) inhalation studies demonstrated that cumene significantly increased the incidence of alveolar/bronchiolar adenomas and carcinomas in B6C3F1 mice. Cumene or isopropylbenzene is a component of crude oil used primarily in the production of phenol and acetone. The
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