2,2’-Dihydroxy-4-methoxybenzophenone benzophenone

A number of LC—MS/MS based methods have been developed for their trace analysis in environmental samples. For water analysis, LC—ESI—MS/MS is the technique of choice however, in recent studies, UHPLC separation and APCI ionization has become increasingly popular. Pedrouzo et al. [78] developed a new UHPLC—MS/MS method using solventless stir-bar sorptive extraction to investigate four UV filters, dihydroxy methoxybenzophenone (DHMB), benzophenone-3 (BP-3), octocrylene (OC), and ethylhexyl dimethyl-aminobenzoate (OD-PABA) in surface water and wastewater. Detection limits of 2.5 ng/1 and 10 ng/1, respectively, were achieved. Recently, Wick, Fink, and Temes combined LC—ESI—MS/MS and LC—APCI—MS/MS after SPE extraction for the determination of five UV filters in wastewater and surface water [79]. Quantification limits achieved ranged from 0.5 to 5 ng/I and 2.5 to 50 ng/I in surface water and wastewater, respectively. An innovative method, more simple and rapid, based on the direct analysis of the surface of a polydimethylsiloxane-coated stir bar previously used to extract the UV filters from water was developed by Flaunschmidt et al. [80]. With this direct analysis in real time (DART) —MS method, seven UV filters were... 

CAS 131-53-3 EINECS/ELINCS 205-026-8 Synonyms 2,2-Dihydroxy-4-methoxybenzophenone Dioxybenzone (2-Hydro) -4-methoxyphenyl) (2-hydroxyphenyO methanone Classification Organic benzophenone deriv. 

Benzophenone 2-hydroxy-4-methoxybenzophenone 2-hydroxy-4-n-octoxybenzophenone 2,4-dihydroxy-4-7i-dodecycloxybenzophenone... 

Stabilizers UVA 2-hydroxy-4-methoxybenzophenone 2,4-dihydroxy-benzophenone 2-benzotriazol-2-yl-4,6-di-tert-butylphenol 2-(2H-benzotriazole-2-yl)-4,6-di-tert-pentylphenol N-(2-ethoxyphenyl)-N -(4-isododecylphenyl)oxamide HAS decane-dioic acid, bis(2,2,6,6-tetramethyl-1-(octyloxy)-4-piperidinyl) ester, reaction products with 1,1-dimethylethylhydroperoxide and octane 2,4-bis[N-butyl-N-(1-cyclohexyloxy-2,2,6,6-tetra-methylpiperidin-4-yl)amino]-6-(2-hydroxyethylamine)-1,3,5-trlazlne bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate 2-dodecyl-N-(2,2,6,6-tetramethyl-4-piperidinyl)succinimide polymer of 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-dispiro [5.1.11,2]-hene-lcosan-21-on and epichlorohydrin Screener Ti02 Phosphite phosphoric acid, (2,4-di-butyl-6-methylphenyl)ethylester ... 

Also obtained by reaction of dimethyl sulfate with 2,3-dihydroxy-4-methoxy-benzophenone or with 2,4-dihydroxy-3-methoxybenzophenone in the presence of alkali [379],... 

Cyasorb UV-9. 2-Hydroxy-4-methoxybenzophenone and Oxybenzone, 79 Cyasorb UV-24, 2,2 -Dihydroxy-4-methoxybenzophenone or Dioxybenzone, 432 Cyasorb UV-531. 2-Hydroxy-4-(octyloxy)benzophenone, 134 Dalbergin. 6-Hydroxy-7-melhoxy-4-phenylcoumarin, 100 Dastib 242. 2-Hydroxy-4-(2-elhylhexyloxy)benzophenone, 135 Dehydrogriseofulvin. 7-Chloro-2, 4,6-trimethoxy-6 -methylspiro[benzofuran-2(3H),l -[2,5]cyclo-hexadiene-3,4 -dione, 458 Diethylene glycol. 2,2 -Oxybisethanol, 134, 507 Diglycol. Diethylene glycol, 507... 

---