Category: 71617-10-2

Cadena-Aizaga, M. Isabel published the artcileAssessment of anthropogenic pollution by UV filters using macrophytes as bioindicators, Computed Properties of 71617-10-2, the main research area is macrophyte bioindicator UV filter anthropogenic pollution; Anthropogenic contamination; Macrophytes; Microwave-assisted extraction; Organic UV filters.

Marine environment pollution has increased in recent decades as a result of anthropogenic activities. Macrophytes can assimilate the compounds dissolved in the water and respond to changes in surround conditions, for that, they can be used as bioindicators of pollution in aquatic environments. Currently organic UV filters have shown ever-increasing in pollution levels in marine ecosystems. The anthropogenic pollution produced by eight organic UV filters in coastal macrophytes was studied. A microwave-assisted extraction (MAE), followed by ultrahigh-performance liquid chromatog. with tandem mass spectrometry (UHPLC-MS/MS) was applied to 76 macrophyte (seaweeds and seagrass) samples from three different beaches on the Gran Canaria Island (Spain), collected for 6 mo. All studied UV filters were found with different detection frequencies from 16% to 100% in macrophyte samples. Octocrylene (OC) was detected in all the analyzed samples throughout the sampling period. The highest concentration, 19,369 ng·g-1 dry weight (dw), was for this compound in the seagrass Cymodocea nodosa. The bioconcentration ratio was determined for several seaweed groups (red, brown, green). Different bioconcentration grades were obtained. Those above 1000 indicated significant accumulation, which increases the possibility of chronic effects on seaweed and at upper tropic levels.

Science of the Total Environment published new progress about Bioindicators. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

O’Malley, Elissa published the artcileThe presence of selected UV filters in a freshwater recreational reservoir and fate in controlled experiments, Safety of Isopentyl 3-(4-methoxyphenyl)acrylate, the main research area is UV filter freshwater photodegradation biodegradation; Degradation; Environmental half-life; Personal care products; Sunscreen agents.

UV filters present in sunscreen and other cosmetics are directly released into the environment during aquatic recreational activities. The extent to which the wide range of UV filters pose a risk to the environment remains unclear. This study investigated the occurrence and dissipation of selected organic UV filters at a recreational site (Enoggera Reservoir, Queensland, Australia) over 12 h. Furthermore, different possible degradation processes were investigated in a controlled off-site experiment with surface water exposed to natural light. Half-lives were estimated for ten UV filters. In Enoggera Reservoir, seven UV filters were detected, of which the most prevalent were octocrylene, avobenzone (BMDBM) and enzacamene (4-MBC). Summed concentrations of the seven UV filters ranged from 7330 ng L-1 at 13:00 h to 2550 ng L-1 at 21:00 h. In the degradation experiment, four UV filters showed no significant change over time. The fate of these compounds in the environment is likely to be mainly influenced by dispersion. Half-lives of the remaining UV filters were 6.6 h for amiloxate (IMC), 20 h for benzophenone 1, 23 h for octinoxate (EHMC), 30 h for 3-benzylidene camphor, 34 h for 4-MBC and 140 h for dioxybenzone (BP8). The degree of susceptibility to photodegradation and biodegradation was generally consistent within a structural class. The fate and half-lives of UV filters are variable and should be considered on a per site basis when assessing environmental risk.

Science of the Total Environment published new progress about Biodegradation. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Safety of Isopentyl 3-(4-methoxyphenyl)acrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sillapachaiyaporn, Chanin published the artcileHIV-1 Protease and Reverse Transcriptase Inhibitory Activities of Curcuma aeruginosa Roxb. Rhizome Extracts and the Phytochemical Profile Analysis: In Vitro and In Silico Screening, Application In Synthesis of 71617-10-2, the main research area is Curcuma aeruginosa human immunodeficiency virus type 1 protease inhibitor; ADMET analysis; AIDS; Curcuma aeruginosa Roxb.; HIV-1 protease inhibitor; HIV-1 reverse transcriptase inhibitor; drug discovery; immunodeficiency virus; virtual screening.

Human immunodeficiency virus type-1 (HIV-1) infection causes acquired immunodeficiency syndrome (AIDS). Currently, several anti-retroviral drugs are available, but adverse effects of these drugs have been reported. Herein, we focused on the anti-HIV-1 activity of Curcuma aeruginosa Roxb. (CA) extracted by hexane (CA-H), Et acetate (CA-EA), and methanol (CA-M). The in vitro HIV-1 protease (PR) and HIV-1 reverse transcriptase (RT) inhibitory activities of CA extracts were screened. CA-M potentially inhibited HIV-1 PR (82.44%) comparable to Pepstatin A (81.48%), followed by CA-EA (67.05%) and CA-H (47.6%), resp. All extracts exhibited moderate inhibition of HIV-1 RT (64.97 to 76.93%). Besides, phytochem. constituents of CA extracts were identified by GC-MS and UPLC-HRMS. Fatty acids, amino acids, and terpenoids were the major compounds found in the extracts Furthermore, drug-likeness parameters and the ability of CA-identified compounds on blocking of the HIV-1 PR and RT active sites were in silico investigated. Dihydroergocornine, 3β,6α,7α-trihydroxy-5β-cholan-24-oic acid, and 6β,11β,16α,17α,21-Pentahydroxypregna-1,4-diene-3,20-dione-16,17-acetonide showed strong binding affinities at the active residues of both HIV-1 PR and RT. Moreover, antioxidant activity of CA extracts was determined CA-EA exhibited the highest antioxidant activity, which pos. related to the amount of total phenolic content. This study provided beneficial data for anti-HIV-1 drug discovery from CA extracts

Pharmaceuticals published new progress about AIDS (disease). 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application In Synthesis of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

O’Malley, Elissa published the artcilePer capita loads of organic UV filters in Australian wastewater influent, HPLC of Formula: 71617-10-2, the main research area is wastewater organic UV filter Australia; Australia; Census; Influent; Sunscreen; UV filter; Wastewater.

Per capita loads of six UV filters were estimated in wastewater influent samples from 36 wastewater treatment plants in Australia collected over a weekend period during the 2016 Australian Census. Of the analyzed samples, 99% contained at least one of the target compounds Ph benzimidazole sulfonic acid (PBSA) was the most prevalent (99%), followed by benzophenone 4 (BP4) (97%), benzophenone 3 (BP3) (87%), benzophenone 1 (BP1) (84%), 4-methylbenzylidene camphor (4-MBC) (22%) and isoamyl 4-methoxycinnamate (IMC) (1.5%). The highest concentrations were 3780 and 5070 ng L-1 for PBSA and BP4, resp. Total per capita UV filter loads in influent across all plants were calculated using population data from the Australian Census and ranged from 0.21 to 3.4 mg day-1 person-1. Notably, a relationship was found between latitude and total per capita daily mass load of UV filters with an increase in mass load from southern to northern catchments. Compared to international studies, mass loads were generally similar with higher loads of BP4 found in Australia. This study provides insight into the occurrence of UV filters in influent wastewater from across Australia and provides the first comprehensive nationwide baseline of UV filter loads.

Science of the Total Environment published new progress about Solar radiation. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, HPLC of Formula: 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Benede, Juan L. published the artcileA paper-based polystyrene/nylon Janus platform for the microextraction of UV filters in water samples as proof-of-concept, Application of Isopentyl 3-(4-methoxyphenyl)acrylate, the main research area is polystyrene nylon Janus platform microextraction UV filter water; Cellulose paper-based microextraction; Environmental analysis; Janus platform; LC-MS/MS; Mixed-mode chemistry platform; Sustainable synthesis; UV filters.

A new mix-mode cellulose-based sorptive phase is described that combines two different polymeric domains (i.e., nylon and polystyrene), thus providing simultaneous hydrophilic and hydrophobic features as a result. By analogy with Janus materials, the new paper-based sorptive phase has been named paper-based polystyrene/nylon Janus-platform (P-Ps/Ny-JP). The main advantages of the proposed P-Ps/Ny-JP are the sustainability, simplicity in synthesis, and low cost of this extraction device. The main parameters affecting the synthesis (i.e., coating procedure and polymers proportion) have been studied, and the resulting material has been characterized via SEM and IR spectroscopy. As a proof-of-concept, the simultaneous extraction of fourteen UV filters of a wide range of polarity, with log P values ranging from – 0.234 to 16.129, from water samples and their determination by liquid chromatog.-tandem mass spectrometry (LC-MS/MS) has been performed. The proposed methodol. enables the determination of these chems. with limits of detection from 12 to 71 ng L-1, and the precision, expressed as a relative standard deviation, was below 15%. The extraction device was applied to the anal. of real water samples likely to contain UV filters (i.e., two private swimming pool water and one seawater) and the recovery values were in the range 73-121%.

Microchimica Acta published new progress about Coating materials. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application of Isopentyl 3-(4-methoxyphenyl)acrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Valentini, Federica published the artcileTailor-Made POLITAG-Pd0 Catalyst for the Low-Loading Mizoroki-Heck Reaction in γ-Valerolactone as a Safe Reaction Medium, Safety of Isopentyl 3-(4-methoxyphenyl)acrylate, the main research area is tailor POLITAG Pd0 catalyst Mizoroki Heck gamma valerolactone safe.

In this contribution, we have reported our study on the fine-tuned design and synthesis of new POLITAGs-Pd0 (POLymeric Ionic TAG) catalytic systems with the intention of defining highly efficient heterogeneous palladium catalysts stabilized by ionic tags able to operate at a very low loading while being fully recoverable/reusable. By varying both the support and the ratio between the metal and immobilized ionic tag, we have accessed five different heterogeneous catalytic systems that have been fully characterized (EA, XPS, TEM, and HR-TEM) to investigate their morphol. differences. The catalytic efficiency of the newly prepared POLITAGs-Pd0 materials was then tested and compared in the representative Mizoroki-Heck cross-coupling reaction, a universally investigated and widely useful process. A close correlation between the catalyst support and catalytic performances has been highlighted. The best system POLITAG-Pd0-HM features a high TOF value (26,786 h-1), affording the final products in high isolated yields by using as little as only 0.0007 mol % of Pd. Moreover, this high catalytic activity coupled with the use of γ-valerolactone (GVL) as a green reaction medium has led to the definition of a very efficient waste-minimized protocol. The newly designed catalyst has been utilized in the representative synthesis of Amiloxate, a widely used sunscreen agent, that could be prepared with negligible metal contamination and very low E-factor.

ACS Sustainable Chemistry & Engineering published new progress about Catalyst supports. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Safety of Isopentyl 3-(4-methoxyphenyl)acrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Xiaotu published the artcilePlastic additives in ambient fine particulate matter in the Pearl River Delta, China: High-throughput characterization and health implications, Application In Synthesis of 71617-10-2, the main research area is plastic additives particulate matter Pearl River Delta China; high throughput characterization health implications.

Elucidation of the chem. components of airborne fine particulate matter (PM2.5) facilitates the characterization of atm. contamination sources and associated human exposure risks. In the present study, we employed a high-throughput anal. approach to investigate the abundance and distribution of 163 plastic additives in ambient PM2.5 collected from 94 different sites across the Pearl River Delta region, China. These chems. are from six categories, including organophosphate esters (OPEs), phthalate esters (PAEs), PAE replacements, bisphenol analogs, UV stabilizers, and antioxidants. Ninety-three of them exhibited a detection frequency greater than 50% in PM2.5, while the combined concentrations of target plastic additives ranged from 610 to 49,400μg/g (median: 3500μg/g) across sites. By category, concentrations of PAEs (median: 2710μg/g) were one to three orders of magnitude greater than those of other groups, followed by PAE replacements (540μg/g) and OPEs (76.2μg/g). Chem.-dependent exposure risks to PM2.5-bound plastic additives were characterized via the estimated daily intake and hazard quotient (HQ) approaches, which resulted in two different risk prioritization systems. Although the HQ approach suggested no or very low health concerns when considering individual chems., the complexity of co-concurrent chems. in PM2.5 raises the concern on potential health risks from exposure to airborne particles and a cocktail of chem. components.

Environmental Science & Technology published new progress about Airborne particles. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application In Synthesis of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Isabel Cadena-Aizaga, M. published the artcileOccurrence and bioconcentration of organic UV filters in primary marine consumers, SDS of cas: 71617-10-2, the main research area is organic UV filter bioconcentration marine environmental pollution.

Organic UV filters are added in different products to absorb UV radiation, whose use has been voiced due to increasing concerning about skin damage. Given their extensive production, these compounds are continuously released to the aquatic environment, which makes them an important family of emerging pollutants. Their presence in the marine environment poses a hazard to the living organisms exposed to them. Primary marine consumers can be recognized as sentinels of pollution in marine environments. In this study, the occurrence of eight widely used organic UV filters was analyzed in five different primary marine consumers from three beaches on the Gran Canaria Island (Spain) collected for 4 mo. For that, a new method, based on microwave-assisted extraction and ultrahigh-performance liquid chromatog. coupled to mass spectrometry in tandem, was optimized and validate. The developed method presented detection limits between 0.7 ng·g-1 dry weight (dw) and 7.1 ng·g-1 dw and intraday and interday precision with ranges from 0.2% to 9.9% and from 1.9% to 12.4%, resp. The method was applied to 20 samples comprising five different types of organisms. All the analyzed samples revealed the presence of organic UV filters, in all samples at least one analyte was determined The highest detection frequency corresponded to Bu methoxydibenzoylmethane (BMDBM) (55%), while octocrylene (OC) was found at the highest concentration (1,735 ng·g-1 dw) in the sea hare Aplysia dactylomela. At the same time, a preliminary bioconcentration and biomagnification assessment was made for the UV filters found in the studied marine organisms. Bioconcentration factors (Log values) over 3.7 were obtained in some cases, which suggests possible bioaccumulation. 4-methylbenzylidene camphor (4MBC) and drometrizole trisiloxane (DTS) obtained a biomagnification factor over 1, which implies potential biomagnification for these compounds

Microchemical Journal published new progress about Aplysia dactylomela. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, SDS of cas: 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Duque, Alaine published the artcileLow toxicity deep eutectic solvent-based ferrofluid for the determination of UV filters in environmental waters by stir bar dispersive liquid microextraction, Computed Properties of 71617-10-2, the main research area is deep eutectic solvent ferrofluid UV filter dispersive liquid microextraction; Deep eutectic solvent; Ferrofluid; Liquid chromatography-tandem mass spectrometry; Stir bar dispersive liquid microextraction; UV filters; Water samples.

In this work, a low toxicity deep eutectic solvent-based ferrofluid is presented for the first time as magnetic fluid to be used as an efficient solvent in liquid-based microextraction techniques. This ferrofluid is made of a hydrophobic deep eutectic solvent, composed by menthol and thymol in a 1:5 molar ratio as carrier solvent, and oleic acid-coated cobalt ferrite (CoFe2O4@oleic acid) magnetic nanoparticles. This material was characterized via magnetism measurement, SEM, IR spectroscopy and d. measurement. The determination of UV filters in environmental water samples was selected as model anal. application to test the extraction performance of this new ferrofluid by employing stir bar dispersive liquid microextraction, prior to liquid chromatog.-tandem mass spectrometry anal. The response surface methodol. was used as a multivariate optimization method for extraction step. Under the optimized conditions, good anal. features were obtained, such as low limits of detection between 7 and 83 ng L-1, good repeatability (relative standard deviations, RSD (%) below 15%), enrichment factors between 46 and 101 and relative recoveries between 80 and 117%, proving the good extraction capability of this ferrofluid. Finally, the method was successfully applied to three environmental waters (beach and river waters), finding trace amounts of the target UV filters. The presented low toxicity deep eutectic solvent-based ferrofluid results to be a good alternative to conventional solvents used in liquid-phase microextraction techniques.

Talanta published new progress about Carrier-mediated three-phase liquid-liquid-liquid solvent bar microextraction. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chaiyabutr, Chayada published the artcileUltraviolet filters in sunscreens and cosmetic products-A market survey, Product Details of C15H20O3, the main research area is UV filter sunscreen cosmetic product market survey Thailand; UV filters; cosmetics; market survey; sunscreens; ultraviolet.

As several reports have raised a variety of environmental, health, and safety issues related to UV filters, it is crucial to understand the trends in the exposure of the population to UV filters. To determine the frequency of UV filter usage in sunscreens and other cosmetic products in Thai market. We surveyed the UV filter labeling on sunscreens and cosmetic products sold in the Thai market. In all, 312 sunscreens and 1350 other cosmetic products were investigated. Titanium dioxide was the most frequently used UV filter in both sunscreens (66.7%) and other cosmetic products (68.4%). Ethylhexyl methoxycinnamate was the most common organic UVB filter, whereas Bu methoxydibenzoylmethane was the most common organic UVA filter. In sunscreens aimed at children, bis-ethylhexyloxyphenol methoxyphenyl triazine was the most commonly used UV filter. The most frequent co-occurrence of UV filters was titanium dioxide and ethylhexyl methoxycinnamate. Titanium dioxide was the most commonly used UV filter, which differs from the findings of previous surveys. Knowing the availability and frequency of each UV filter provides valuable information about consumer exposure levels, facilitates refinements of the allergen series in patch testing, and enhances the monitoring of adverse effects of UV filters.

Contact Dermatitis published new progress about Allergens Role: ADV (Adverse Effect, Including Toxicity), BIOL (Biological Study). 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Product Details of C15H20O3.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics