Results 201 to 210 of about 7,590 (235)
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Dermatitis, 2014
Benzophenones are ultraviolet light filters that have been documented to cause a myriad of adverse cutaneous reactions, including contact and photocontact dermatitis, contact and photocontact urticaria, and anaphylaxis. In recent years, they have become particularly well known for their ability to induce allergy and photoallergy. Topical sunscreens and
Ashley R, Heurung +2 more
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Benzophenones are ultraviolet light filters that have been documented to cause a myriad of adverse cutaneous reactions, including contact and photocontact dermatitis, contact and photocontact urticaria, and anaphylaxis. In recent years, they have become particularly well known for their ability to induce allergy and photoallergy. Topical sunscreens and
Ashley R, Heurung +2 more
openaire +3 more sources
Journal of Organometallic Chemistry, 2018
Benzophenones (BPs) of the type 2-R-BP and 2,2'-R-BP, carrying silicon-or germanium-containing substituents R (R = EY2X; E = Si, Ge; Y = H, Me, F, Cl; X = H, F, Cl, OTf) at one or at two ortho-positions of the arene rings, were theoretically designed.
Evgeniya P. Doronina +3 more
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Benzophenones (BPs) of the type 2-R-BP and 2,2'-R-BP, carrying silicon-or germanium-containing substituents R (R = EY2X; E = Si, Ge; Y = H, Me, F, Cl; X = H, F, Cl, OTf) at one or at two ortho-positions of the arene rings, were theoretically designed.
Evgeniya P. Doronina +3 more
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Safety evaluation of benzophenone
Food and Chemical Toxicology, 1991Benzophenone (FEMA No. 2134; CAS No. 119-61-9) was administered in the diet to rats at target dose levels of 20 mg/kg body weight/day for 90 days and 100 or 500 mg/kg/day for 28 days. Body weights and food consumption were measured weekly; haematology, clinical chemistry and urinalysis values were obtained at 4 wk and at the end of the study. Gross and
G A, Burdock, D H, Pence, R A, Ford
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Archives of dermatology, 1989
Incorrect diagnosis of photoallergy to sunscreen products represents a unique clinical dilemma. Increasing sunscreen usage for suspected idiopathic photosensitivity or a change to a sunscreen containing the same photoallergen only worsens the problem. While photoallergy to p-aminobenzoic acid and its esters is well known by dermatologists and the lay ...
E, Knobler +5 more
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Incorrect diagnosis of photoallergy to sunscreen products represents a unique clinical dilemma. Increasing sunscreen usage for suspected idiopathic photosensitivity or a change to a sunscreen containing the same photoallergen only worsens the problem. While photoallergy to p-aminobenzoic acid and its esters is well known by dermatologists and the lay ...
E, Knobler +5 more
openaire +3 more sources
Benzophenone Photophores in Biochemistry
Biochemistry, 1994The photoactivatable aryl ketone derivatives have been rediscovered as biochemical probes in the last 5 years. The expanding use of benzophenone (BP) photoprobes can be attributed to three distinct chemical and biochemical advantages. First, BPs are chemically more stable than diazo esters, aryl azides, and diazirines. Second, BPs can be manipulated in
G, Dormán, G D, Prestwich
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Conformations of substituted benzophenones
Acta Crystallographica Section B Structural Science, 2008The inclination of the two aryl rings (ring twists) in a series of benzophenone molecules has been examined. For each structure the dihedral angle (between the planes of the two sets of six aromatic C atoms) relates to both the steric considerations of the single molecule and the packing forces related to the crystal structure.
Philip J, Cox +2 more
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Prevalent polymorphism in benzophenones
Acta Crystallographica Section C Structural Chemistry, 2018We report here the crystal structures of dimorphs of 4-hydroxybenzophenone, C13H10O2, and 4-(dimethylamino)benzophenone, C15H15NO, as well as trimorphs of 4,4′-dimethylbenzophenone, C15H14O. The polymorphs were isolated from slow-evaporation conditions or from cocrystallization attempts.
Antonia A. Soqaka +2 more
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4,4'-Methylenediiminobis(benzophenone)
Acta Crystallographica Section C Crystal Structure Communications, 1994The title compound [N,N'-bis(benzoylphenyl)methanediamine, C 27 H 22 N 2 O 2 ] was prepared by condensation of 4-aminobenzophenone (ABP) and formaldehyde at room temperature. In the molecule, two ABP moieties are linked by a methylene group. The bond lengths and angles within the two ABP groups are very similar; however, the dihedral angles between the
Y. He, G. Su, J. Shi
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Benzophenone glycosides from Gnidia involucrata
Phytochemistry, 2000Six compounds have been isolated from the methanol extract of the aerial parts of Gnidia involucrata (Thymelaeaceae). They were identified as 2,3,4',5,6-pentahydroxybenzophenone-4-C-glucoside and 2,4',6-trihydroxy-4-methoxybenzophenone-2-O-glucoside, together with mangiferin, kaempferol-3-O-glucoside, yuankanin and manniflavanone by chemical and ...
Ferrari, J. +5 more
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Contact urticaria photoinduced by benzophenones
Contact Dermatitis, 2003A 31-year-old man presented with a 7-year history of recurrent facial dermatitis. Until 2 years ago this had occurred in the winter only, but now was also to be seen in the summer, involving the whole face including the lips. He likened it to a pruriginous sunburn that appeared within 6– 12 h and disappeared in 48 h via desquamation.
J L, Bourrain, P, Amblard, J C, Béani
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