Results 241 to 250 of about 24,253 (308)

Cosmetic and personal care product use, urinary levels of parabens and benzophenones, and risk of endometriosis: results from the EndEA study.

Environmental Research, 2020
AIM To explore the relationship of urinary concentrations of different congeners of benzophenones and parabens with the utilization of cosmetics and personal care products (PCPs) and their impact on the risk of endometriosis, and to evaluate the ...
F. Peinado, O. Ocón-Hernández, L. Iribarne-Durán, F. Vela-Soria, A. Ubiña, C. Padilla, J. Mora, J. Cardona, J. León, M. Fernández, N. Olea, F. Artacho-Cordón   +11 more
semanticscholar   +1 more source

Species-specific accumulation and temporal trends of bisphenols and benzophenones in mollusks from the Chinese Bohai Sea during 2006–2015

Science of the Total Environment, 2019
Information on the occurrence and bioaccumulation of bisphenols and benzophenones in coastal marine invertebrates is limited. In this study, concentrations of eight bisphenol and five benzophenone analogues were determined in 186 mollusks collected from ...
Chunyang Liao, Kurunthachalam Kannan
exaly   +2 more sources

Benzophenone Photophores in Biochemistry

Biochemistry, 1994
The 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
openaire   +2 more sources

Occurrence of benzophenones, parabens and triclosan in the Yangtze River of China, and the implications for human exposure

Chemosphere, 2018
Humans could be exposed to ingredients in personal care products (PCPs) via ingestion of water originated from contaminated water source, yet little attention has been focused on the distribution of benzophenones, parabens and triclosan in the Yangtze ...
Yanjian Wan, Mingyang Wu, Zhenyu He
exaly   +2 more sources

Safety evaluation of benzophenone

Food and Chemical Toxicology, 1991
Benzophenone (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
openaire   +2 more sources

Photoallergy to benzophenone.

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, L, Almeida, A M, Ruzkowski, J, Held, L, Harber, V, DeLeo   +5 more
openaire   +3 more sources

Prevalent polymorphism in benzophenones

Acta Crystallographica Section C Structural Chemistry, 2018
We 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, Catharine Esterhuysen, Andreas Lemmerer   +2 more
openaire   +2 more sources

Conformations of substituted benzophenones

Acta Crystallographica Section B Structural Science, 2008
The 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, Dimitrios, Kechagias, Orla, Kelly   +2 more
openaire   +2 more sources

Prenylated xanthones and benzophenones from the fruits of Garcinia bracteata and their potential antiproliferative and anti-inflammatory activities.

Bioorganic chemistry (Print), 2020
Ten previously undescribed compounds, including five prenylated xanthones (1-5), two caged xanthones (16-17) and three rearranged benzophenones (27-29), together with nineteen known compounds were isolated from the fruits of Garcinia bracteata.
Qing Xue, Yu Chen, Huijun Yin, H. Teng, R. Qin, Hong Liu, Qingqing Li, Zhinan Mei, Guangzhong Yang   +8 more
semanticscholar   +1 more source

Copper-Catalyzed Asymmetric Hydrogenation of Unsymmetrical ortho-Br Substituted Benzophenones.

Angewandte Chemie
The asymmetric hydrogenation of benzophenones, catalyzed by low-activity earth-abundant metal copper, has hitherto remained a challenge due to the substrates equipped with two indistinguishably similar aryl groups. In this study, we demonstrated that the
Jing Guan, Yicong Luo, Qiyuan Wang, Jianzhong Chen, Wanbin Zhang   +4 more
semanticscholar   +1 more source