Known esters. Medical search. Frequent questions

These highlights do not include all the information needed to use OMEGA-3-ACID ETHYL ESTERS CAPSULES safely and effectively. (nih.gov)
See full prescribing information for OMEGA-3-ACID ETHYL ESTERS CAPSULES. (nih.gov)
Omega-3-acid ethyl esters capsules are a combination of ethyl esters of omega 3 fatty acids, principally eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), indicated as an adjunct to diet to reduce triglyceride (TG) levels in adult patients with severe (≥500 mg/dL) hypertriglyceridemia. (nih.gov)
The effect of omega-3-acid ethyl esters capsules on the risk for pancreatitis has not been determined. (nih.gov)
The daily dose of omega-3-acid ethyl esters capsules is 4 grams per day taken as a single 4-gram dose (4 capsules) or as two 2-gram doses (2 capsules given twice daily). (nih.gov)
Patients should be advised to swallow omega-3-acid ethyl esters capsules whole. (nih.gov)
Do not break open, crush, dissolve, or chew omega-3-acid ethyl esters capsules. (nih.gov)
Omega-3-acid ethyl esters capsules are contraindicated in patients with known hypersensitivity (e.g., anaphylactic reaction) to omega-3-acid ethyl esters or any of its components. (nih.gov)
Omega-3-acid ethyl esters may increase levels of low-density lipoprotein (LDL). (nih.gov)
There is a possible association between omega-3-acid ethyl esters and more frequent recurrences of symptomatic atrial fibrillation or flutter in patients with paroxysmal or persistent atrial fibrillation, particularly within the first months of initiating therapy. (nih.gov)
Patients taking omega-3-acid ethyl esters and an anticoagulant or other drug affecting coagulation (e.g., anti-platelet agents) should be monitored periodically. (nih.gov)
Omega-3-acid ethyl esters capsules are indicated as an adjunct to diet to reduce triglyceride (TG) levels in adult patients with severe (greater than or equal to 500 mg/dL) hypertriglyceridemia. (nih.gov)
Patients should be placed on an appropriate lipid-lowering diet before receiving omega-3-acid ethyl esters capsules and should continue this diet during treatment with omega-3-acid ethyl esters capsules. (nih.gov)
Laboratory studies should be done to ascertain that the lipid levels are consistently abnormal before instituting therapy with omega-3-acid ethyl esters capsules. (nih.gov)

Phosphate esters are added to consumer and industrial products in order to reduce flammability. (cdc.gov)
Some phosphate esters will deposit on wet and dry surfaces and others will be broken down by water. (cdc.gov)
Most foods contain small amounts of phosphate esters and you may be exposed by eating contaminated food. (cdc.gov)
Drinking water may contain phosphate esters due to leakage from plastics or industrial waste water discharge. (cdc.gov)
The Department of Health and Human Services (DHHS) and the EPA have not classified the carcinogenic potential of the phosphate esters. (cdc.gov)
Avoid installation or use of materials that are known to contain phosphate esters-based flame retardants in indoor environments to minimize exposure via air. (cdc.gov)
potential of the phosphate esters. (cdc.gov)
Fire tests shall be performed which measure and describe the properties of the phosphate esters in response to heat and flame under controlled laboratory conditions and should not be considered or used for the description or appraisal of the fire hazard of the fluids under actual fire conditions. (astm.org)
This section will examine the demand for various synthetic basestocks-PAO, Group III/III+, polyalkylene glycol (PAG), synthetic esters, phosphate esters, and polyisobutenes, among others-in various regions and end-use applications. (klinegroup.com)

Dive into the research topics where Ester Barinaga is active. (lu.se)

at the end of the video, why is the methyl ester group a better leaving group than the butyl ester group? (khanacademy.org)
300 ( composite function)C. In the second set of experiments, mixtures of n-heptanoic acid and glycerol were heated using the same experimental conditions, with and without oxalic acid, between 100 ( composite function)C and 250 ( composite function)C. The main condensation products were two isomers each of monoacylglycerols and diacylglycerols at all temperatures, as well as minor amounts of the fatty acid anhydride and methyl ester. (nih.gov)

Polyaniline/titanium dioxide nanorods functionalized carbon fibers for in-tube solid-phase microextraction of phthalate esters prior to high performance liquid chromatography-diode array detection. (bvsalud.org)
To improve extraction performance of carbon fibers (CFs) towards phthalate esters (PAEs), titanium dioxide (TiO2) nanorods array was in-situ grown on the surface of CFs, then polyaniline (PANI) was used to modify it. (bvsalud.org)

A new and efficient nonionic surfactant, polyglyceryl esters, with excellent performance, are known as the Polyglyceryl Fatty Ester. (mis-asia.com)
Polyglyceryl esters can either promote or inhibit crystallization. (mis-asia.com)
Polyglyceryl esters can be naturally sourced and have a wide range of solubility and hydrophilic-lipophilic balance (HLB ) numbers ," said Jordan Petkov, PhD, Head Global R&D, Consumer Product Ingredients (CPI), Lonza. (lonza.com)

The present work reports the electrochemical fabrication of an ionic liquid functionalized multiwalled carbon nanotubes-polyaniline (MWCNT@IL/PANI) nanocomposite coating and its application in the headspace-solid phase microextraction (HS-SPME) and gas chromatography (GC) determination of benzoic acid esters (i.e., methyl benzoate, ethyl benzoate, propyl benzoate and butyl benzoate). (who.int)

Sucrose esters or sucrose fatty acid esters are a group of non-naturally occurring surfactants chemically synthesized from the esterification of sucrose and fatty acids (or glycerides). (wikipedia.org)
Later, the concept of synthesizing sucrose ester from sucrose and fatty acids was patented in 1952. (wikipedia.org)
Typical saturated fatty acids that are used to produce sucrose esters are lauric acid, myristic acid, palmitic acid, stearic acid and behenic acid, and typical unsaturated fatty acids are oleic acid and erucic acid. (wikipedia.org)
Due to the hydrophilic property of sucrose and the lipophilic property of fatty acids, the overall hydrophilicity of sucrose esters can be tuned by the number of hydroxyl groups that are reacted with fatty acids and the identity of the fatty acids. (wikipedia.org)
The fewer free hydroxyl groups and the more lipophilic fatty acids, the less hydrophilic the resulting sucrose ester becomes. (wikipedia.org)
The melting point of sucrose esters is between 40 °C and 60 °C depending on the type of fatty acids and the degree of substitution. (wikipedia.org)
At pH higher than 8, saponification (hydrolysis of the ester bond to release the original sucrose and the salt of fatty acids) might occur. (wikipedia.org)
Its hydrophilicity is increased with an increase in glycerol ester polymerization, and its lipophilicity changes depending on the alkyl of the fatty acids. (mis-asia.com)
The European Food Safety Authority has issued a positive safety opinion on sucrose esters produced by reacting sucrose and vinyl esters of fatty acids, which could open up new possibilities for improving the solubility of flavourings in drinks. (foodnavigator.com)
Sucrose esters of fatty acids are already permitted in the EU, after being assessed in 1992 and assigned the E-number E473. (foodnavigator.com)
The earlier approval relates to sucrose esters of fatty acids and sucroglycerides from palm oil, lard, and tallow fatty acids. (foodnavigator.com)
These sucrose esters are produced via a different process, by reacting sucrose and vinyl esters of fatty acids. (foodnavigator.com)
EFSA was asked to assess the safety of the sucrose esters produced via this process by the European Commission - as well as whether the go-ahead to use the sucrose esters of fatty acids in water-based beverages would increase total intake levels beyond the current ADI of 40mg/kg. (foodnavigator.com)
It found that, as long as the ADI of 40mg/kg is not exceeded, the sucrose esters of fatty acids produced by the new process do not pose a safety issue. (foodnavigator.com)
However in Ireland, where sucrose esters of fatty acids are used more commonly as a glazing agent for fruits, some consumers could exceed the ADI. (foodnavigator.com)

A class of sucrose esters with highly substituted hydroxyl groups, olestra, is also used as a fat replacer in food. (wikipedia.org)
Sucrose monostearate Sucrose esters were first mentioned in 1880 by Herzfeld who described the preparation of sucrose octaacetate. (wikipedia.org)
Both are sucrose fatty acid esters. (wikipedia.org)
In 1939, Cantor, who patented a production route of sucrose fatty acid esters from starch factory by-products, claimed that the products could be used as emulsifying agents or fats. (wikipedia.org)
In 1950s, Foster Snell and his team conducted research on the production of several mono- and di-substituted sucrose esters. (wikipedia.org)
Sucrose has 8 hydroxyl groups which can be reacted with fatty acid esters to produce sucrose esters. (wikipedia.org)
Sucrose esters' HLB values can range from 1-16. (wikipedia.org)
Low HLB (3.5-6.0) sucrose esters act as a water-in-oil emulsifier while high HLB (8-18) sucrose esters act as an oil-in-water emulsifier. (wikipedia.org)
Sucrose esters are off-white powders. (wikipedia.org)
Though produced from sucrose, sucrose esters do not have a sweet taste, but are bland or bitter. (wikipedia.org)
Sucrose esters can be heated to 185 °C without losing their functionality. (wikipedia.org)
Sucrose esters are stable in the pH range of 4 to 8, so they can be used as an additive in most foods. (wikipedia.org)
This part of the article aims at disambiguating of the notion of HLB, "Hydrophile - Lipophile Balance", attributed to Sucrose Fatty Acid Ester surfactants (also named sucrose esters or sugar esters). (wikipedia.org)
The attribution of HLB values to sucrose esters emulsifiers at the origin is unclear, since no bibliographic source can be found on how the attribution has been made. (wikipedia.org)
Polyglycerol Ester's emulsification is comparable to that of sucrose fatty acid esters in neutral pH ranges. (mis-asia.com)
But Singaporean company Compass Foods applied in 2008 for approval to market sucrose esters from monoesters of lauric acid, mysteristic acid, palmitic acid, and stearic acid. (foodnavigator.com)
Notably, the sucrose ester of lauric acid was not considered in the evaluation that led to this ADI. (foodnavigator.com)
In order for the new esters to be permitted, EFSA pointed out that the current specifications would have to be changed to include the sucrose ester of lauric acid. (foodnavigator.com)

The mechanism for the acid-catalyzed hydrolysis of esters (and transesterification). (khanacademy.org)
at the mechanism of acid promoted ester hydrolysis. (khanacademy.org)

Esters are comparatively easy to synthesize when such synthesis is performed in a laboratory environment with suitable apparatus and suitable analytical instrumentation to evaluate the product and efforts at purification. (yarchive.net)
This is really the same answer as in the previous question, but I suspect that extraction and separation is probably easier for certain esters than synthesis. (yarchive.net)

South Plainfield, NJ (USA), 9 October 2018 - At SEPAWA 2018 Lonza will present the latest research on polyglyceryl ester surfactants and showcase its Polyaldo ® brand. (lonza.com)
The Lonza Polyaldo ® polyglyceral esters (PGEs) are naturally derived surfactants that can be easily customized to suit the cleansing-formulation needs of the global personal care market. (lonza.com)
Petkov will present "Polyglyceryl Ester Based Surfactants - An Attractive Green Alternative to the Current Non-Ionic Surfactants Offering" at the Innovations Forum. (lonza.com)

Thus O-esters of dithiocarbonic acid. (iupac.org)
Salts and esters of xanthic acid are xanthates. (iupac.org)
This is said to result in very tiny residues of vinyl esters of fatty acid, acetaldehyde, and p-methoxyphenol - but these were not seen to be at a level to raise concern for EFSA's panel. (foodnavigator.com)
If there is an excess of butanol in acid while there is only a limited amount of ester, you would see transesterification occur. (khanacademy.org)
Acid-dPEG 25 -NHS ester is an amine-reactive crosslinker designed to facilitate intermolecular crosslinking with free amines at each end of the crosslinker through a single molecular weight, discrete polyethylene glycol (dPEG) backbone. (sigmaaldrich.com)
The other end terminates as the N-hydroxysuccinimidyl (NHS) ester of propionic acid. (sigmaaldrich.com)
Esters are created when alcohol and acid molecules interact and integrate with each other, which occurs during the fermentation, distillation and maturation processes. (whiskymag.com)
The consequence of yeast producing alcohol and acid is that molecules of each are present within yeast cells, where complex interactions between these molecules sees them integrating and being transformed into esters. (whiskymag.com)
Ethanol and short chain acids are the first to interact and create a group of short chain fatty acid esters, with these esters typically comprising around four units each. (whiskymag.com)
Consequently, ethanol and acid molecules interact within the wort, creating additional short chain esters. (whiskymag.com)
The level of long chain fatty acid esters can remain constant during maturation, though you won't necessarily detect them in the mature product, it all depends on the level. (whiskymag.com)
The experimental characterization of the time-dependent properties of fatty acid based vinyl ester resins with reduced styrene content and emissions was conducted and compared to that of various commercial vinyl ester resins. (aiche.org)
The fatty acid based vinyl ester resins were found to have similar or slightly inferior thermo-mechanical properties and a more pronounced viscoelastic response compared to the commercial resins. (aiche.org)
However, the research definitively demonstrates that the evaluated fatty acid vinyl ester resins are a viable replacement to commercial resins in certain applications with concomitant attractive environmental benefits. (aiche.org)

Raspberry Seed Oil PEG-8 Esters is a product obtained by the transesterification of RubusIdaeus (Raspberry) Seed Oil (q.v.) and PEG-8 (q.v. (ewg.org)

At its seventh meeting, the Committee examined the proposal by the European Union and its member States parties to the Stockholm Convention to list pentachlorophenol and its salts and esters in Annexes A, B and/or C to the Convention and applied the screening criteria specified in Annex D to the Convention. (pops.int)
The Committee agreed to defer its consideration of pentachlorophenol and its salts and esters until its eighth meeting and to include the draft decision on the substance in annex II to the present report, enclosed in square brackets to indicate a lack of consensus on certain items. (pops.int)

Maria Teresa Costa-Campi & José García-Quevedo & Ester Martínez-Ros, 2016. (repec.org)

The Committee evaluated a group of 25 flavouring agents consisting of alicyclic ketones, secondary alcohols and related esters (see Table 1). (inchem.org)
The total annual volume of production of the 25 alicyclic ketones, secondary alcohols and related esters in this group is approximately 520 kg in Europe (International Organization of the Flavor Industry, 1995) and 310 kg in the USA (Lucas et al. (inchem.org)
The methyl xanthate ester is presented as a versatile protective group for alcohols. (lu.se)

While both ends of the molecule can react with free amines such as the ε-amine group of lysine, only one end of the dPEG spacer is activated as the NHS ester. (sigmaaldrich.com)
Which functional group does not contain oxygen amine alcohol ester ketone? (answers.com)
The rate of this charge shifting can be easily modified by the incorporation of different ester leaving groups and different distances between the ester and the tertiary amine groups. (aiche.org)
In our recent study [6], the side chain length was varied to include either one or two alkyl spacers denoted between the amine and the carboxylate/ester groups. (aiche.org)
An alkyl spacer length of one brings the pKa of each amine into the optimal range for endosomal buffering, and the hydrolytic ester can be easily modified to speed or slow charge switching. (aiche.org)

I suspect your real question is: can esters be synthesized in a home laboratory environment? (yarchive.net)

Medium and long chain esters have a heavier molecular weight than short chain esters, and so are far less prone to loss through evaporation," says Jane Millar. (whiskymag.com)

In alkaline, acidic and neutral environments, polyglyceryl fat ester remains relatively stable. (mis-asia.com)
Meanwhile, the esters which have been formed during fermentation are pretty stable and are not modified by distillation. (whiskymag.com)

Ester-C® has a neutral pH, making it non-acidic and gentle on the stomach. (ralphs.com)

Distillation creates a spread of short, medium and long chain esters, but at a slightly faster rate than during fermentation as the heat of distillation speeds up the rate of reactions between the alcohol and organic acids. (whiskymag.com)
As the new make spirit contains acids and alcohol, interaction between the two creates additional esters while the spirit is maturing in oak casks. (whiskymag.com)
As oak casks are porous, this allows water and alcohol, together with some esters, to evaporate from the cask during aging. (whiskymag.com)
Short chain esters are very volatile and so can readily evaporate from the cask, together with the alcohol, and be lost. (whiskymag.com)

Ester-C® is a breakthrough patented Vitamin C formula supported with naturally occurring metabolites. (ralphs.com)

Hydroxyl groups can easily be transformed into methyl xanthate esters by several methods and are commonly used as an auxiliary in the Barton-McCombie reaction. (lu.se)
This method is orthogonal to many common hydroxyl protective groups that can be introduced and cleaved in the presence of methyl xanthate ester. (lu.se)

Avoid food that is high in phosphate ester content. (cdc.gov)

however, in comparison to many other organic compounds, esters are rather benign. (yarchive.net)

Phosphate ester flame retardants are human-made chemicals that are typically liquids at room temperature, although some are solids. (cdc.gov)
Medium chain esters (typically comprising several units linked together) contribute richer fruityness, such as apples and pears. (whiskymag.com)

This fact sheet answers the most frequently asked health questions (FAQs) about phosphate ester flame retardants. (cdc.gov)
The general population is primarily exposed to phosphate ester flame retardants by eating contaminated food. (cdc.gov)
What happens to phosphate ester flame retardants when they enter the environment? (cdc.gov)
How might I be exposed to phosphate ester flame retardants? (cdc.gov)
How can phosphate ester flame retardants affect my health? (cdc.gov)
How likely are phosphate ester flame retardants to cause cancer? (cdc.gov)
There is not enough information available to determine with certainty whether or not phosphate ester flame retardants produce cancer in humans. (cdc.gov)
No studies have been conducted to examine the toxicity of phosphate ester flame retardants in children. (cdc.gov)
How can families reduce the risk of exposure to phosphate ester flame retardants? (cdc.gov)
Phosphate ester flame retardants can be measured in retardants produce cancer in humans. (cdc.gov)
How can phosphate ester flame for TnBP over an 8-hour workday and 40-hour work week. (cdc.gov)

We show that these methyl xanthate esters can readily and chemoselectively be cleaved under mild conditions by the action of diethylenetriamine using microwave heating. (lu.se)

Two sets of experiments were conducted to study dehydration reactions of model lipid precursors in aqueous media to form acyl polyols and wax esters, and to evaluate the stability and reactions of the products at elevated temperatures. (nih.gov)

Since many esters are used as industrial solvents, such exposure can occur. (yarchive.net)

Czech director Ester Brym is ready to showcase her 2nd feature film called Autumn of Route 66. (filmfestivals.com)

[email protected] (Allan Adler) writes: >Larry Lippman was kind enough to post a list of esters and fruits where they >occur. (yarchive.net)

Glutathione monoethyl ester ameliorates caerulein-induced pancreatitis in the mouse. (jci.org)
Mice treated with glutathione monoethyl ester (20 mmol/kg 1 h before caerulein, 10 mmol/kg 3 and 7 h after starting caerulein) were found to have blunted depletion of pancreatic glutathione, diminished histologic evidence of pancreatitis (necrosis, inflammation, and vacuolization), and lower serum amylase values compared with mice treated with caerulein alone. (jci.org)

Additionally, each chain length was synthesized with both an ethyl ester and a tert-butyl ester hydrolytic group. (aiche.org)

Filmmaker Ester Brym shot the film interely on handheld Flip camera, which offers viewers the exceptional feeling of actually experiencing old Route 66 themselves. (filmfestivals.com)

These esters are excellent emollients for the skin. (lush.com)

You must bear in mind that my list was but a small fraction of esters which have been identified in fruits. (yarchive.net)

Anatomy3

Organisms5

Chemicals and Drugs73

Analytical, Diagnostic and Therapeutic Techniques and Equipment5

Phenomena and Processes19

Disciplines and Occupations1

Technology, Industry, Agriculture1

Information Science2

Omega-3-acid ethyl esters14

Phosphate esters9

Barinaga1

Methyl ester2

Phthalate esters2

Polyglyceryl esters3

Solid-phase microextr1

Fatty acids15

Sucrose18

Hydrolysis2

Synthesis2

Surfactants3

Acid14

Transesterification1

Salts2

20161

Alcohols3

Amine5

Laboratory1

Molecular1

Stable2

Neutral pH1

Alcohol4

Formula1

Hydroxyl2

Content1

Organic1

Typically2

Flame11

Readily1

Reactions1

Exposure1

Showcase1

Occur1

Pancreatitis2

Group1

Route1

Excellent1

List1