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In organic chemistry, an active ester is an ester functional group that is highly susceptible toward nucleophilic attack. Activation can be imparted by
Active_ester
Chemical compound
Uronium) is a reagent used in peptide coupling chemistry to generate an active ester from a carboxylic acid. HATU is used along with Hünig's base (N
HATU
Spanish actress (born 2000)
Ester Expósito Gayoso (born 26 January 2000) is a Spanish actress. She is best known for her starring role as Carla Rosón Caleruega in the Netflix teen
Ester_Expósito
Class of chemical compounds
(PFP) esters are chemical compounds with the generic formula RC(O)OC6F5. They are active esters derived from pentafluorophenol (HOC6F5). PFP esters are
Pentafluorophenyl_esters
Indian actress and singer (born 1992)
Ester Valerie Noronha is an Indian actress and director, who works in Telugu, Kannada, Hindi, and Konkani films. She is known for her roles in Bhimavaram
Ester_Noronha
Chemical compound
(CH2CO)2NOH. It is a white solid that is used as a reagent for preparing active esters in peptide synthesis. It can be synthesized by heating succinic anhydride
N-Hydroxysuccinimide
American singer-songwriter (born 1986)
Esther Renay Dean, known professionally as Ester Dean, is an American singer-songwriter and record producer. She rose to prominence as a pop songwriter
Ester_Dean
medroxyprogesterone acetate, and nomegestrol acetate are active themselves and are not prodrugs, whereas esters of 19-nortestosterone derivatives like norethisterone
List_of_progestogen_esters
Chemical compound
acid reacts with DMTMM to form the active ester, releasing a molecule of N-methylmorpholinium (NMM). The resulting ester is highly reactive and can undergo
DMTMM
Chemical compound
generating active esters from N-hydroxyphthalimide for use in peptide synthesis, an approach later extended to using N-hydroxysuccinimide. The ester linkage
N-Hydroxyphthalimide
Chemical compound
chloroformate, also known as benzyl chlorocarbonate or Z-chloride, is the benzyl ester of chloroformic acid. It can be also described as the chloride of the benzyloxycarbonyl
Benzyl_chloroformate
Pharmaceutical compound
designer drug as an active ingredient in e-cigarette liquids marketed under names such as space oil or kpods. It has a trifluoroethyl ester group in place
CF3-Etomidate
Chemical compound
pentafluorophenolate. Pentafluorophenol is used to prepare pentafluorophenyl esters, which are active esters useful in peptide synthesis. Pentafluorophenol is considered
Pentafluorophenol
Drug class
A progestogen ester is an ester of a progestogen or progestin (a synthetic progestogen). The prototypical progestogen is progesterone, an endogenous sex
Progestogen_ester
Pharmaceutical compound
designer drug as an active ingredient in e-cigarette liquids marketed under names such as space oil or kpods. It has a 2,2-difluoroethyl ester group in place
CF2-Etomidate
Class of chemical compounds
Sucrose esters or sucrose fatty acid esters are a group of non-naturally occurring surfactants chemically synthesized from the esterification of sucrose
Sucrose_esters
Chemical way to synthesize proteins
amino acid thioester reactions led Wieland and others to develop the 'active ester' method for the synthesis of protected peptide segments by conventional
Native_chemical_ligation
Pharmaceutical compound
N-Acetylcysteine ethyl ester (NACET, NAC-Et) is an antioxidant which acts as a lipophilic prodrug for N-acetylcysteine and subsequently glutathione, with
N-Acetylcysteine_ethyl_ester
Chemical compound
derivative and a biologically active chemical constituent of artichoke (Cynara cardunculus). Chemically, it is an ester formed from quinic acid and two
Cynarine
Chemical reaction
chiral esters is used. In the former case (desymmetrization), the chiral environment of the enzyme active site leads to selective hydrolysis of the ester that
Asymmetric ester hydrolysis with pig-liver esterase
Asymmetric_ester_hydrolysis_with_pig-liver_esterase
Relatively large characteristic segment of a molecule
February 2019. Active moiety is the molecule or ion, excluding those appended portions of the molecule that cause the drug to be an ester, salt (including
Moiety_(chemistry)
Czech actress and model (born 1984)
Ester Geislerová (born 5 March 1984) is a Czech actress and former model. Geislerová was born in Prague. She studied at the Academy of Fine Arts. Her
Ester_Geislerová
This is a list of estrogen esters, or ester prodrugs of estrogens. It includes esters, as well as ethers, of steroidal estrogens like estradiol, estrone
List_of_estrogen_esters
Chemical compound
pulsed plasma deposition. Poly(pentafluorophenyl acrylate) is a polymeric active ester and hence features an inherent reactivity towards nucleophiles such as
Poly(pentafluorophenyl acrylate)
Poly(pentafluorophenyl_acrylate)
French singer
Pauline Ester (born Sabrina Ocon; 18 December 1963, Toulouse, France) is a French singer. Ester's album, "Le Monde est fou", certified Gold disc, met
Pauline_Ester
Agents that emit light after excitation by light
attached to proteins to specific functional groups, such as amino groups (active ester, carboxylate, isothiocyanate, hydrazine), carboxyl groups (carbodiimide)
Fluorophore
Ester of an estrogen
An estrogen ester is an ester of an estrogen, most typically of estradiol but also of other estrogens such as estrone, estriol, and even nonsteroidal
Estrogen_ester
Production of peptides
(HOAt). These reagents attack the O-acylisourea intermediate to form an active ester, which subsequently reacts with the peptide to form the desired peptide
Peptide_synthesis
Romanian singer and songwriter (born 1993)
Ester Alexandra Crețu (Romanian pronunciation: [ˈester alekˈsandra ˈkret͡su]; born 21 July 1993), known professionally as Ester Peony (formerly only Ester)
Ester_Peony
Chemical compounds in which hydroxyl group is attached directly to an aromatic ring
versatile antioxidant. Phenols undergo esterification. Phenol esters are active esters, being prone to hydrolysis. Phenols are reactive species toward
Phenols
Chemical compound
(June 2007). "Preparation and properties of optically active poly(N-methacryloyl l-leucine methyl ester)". Polymer. 48 (13): 3616–3623. doi:10.1016/j.polymer
Creatine_methyl_ester
05:00 PHT on June 5 (21:00 UTC on June 4), and PAGASA assigned it the name Ester. That same day, the JTWC analyzed the system as a subtropical depression
2026_Pacific_typhoon_season
Pharmaceutical compound
active ingredient in e-cigarette liquids marketed under names such as space oil or kpods. It has an n-butyl ester group in place of the ethyl ester of
Butomidate
Pharmaceutical compound
active ingredient in e-cigarette liquids marketed under names such as space oil or kpods. It has an iso-butyl ester group in place of the ethyl ester
Iso-butomidate
Pharmaceutical compound
drug as an active ingredient in e-cigarette liquids marketed under names such as space oil or kpods. It has a 3,3,3-trifluoropropyl ester group in place
CF3-Propoxate
Chemical reaction which adds an acyl group (R–C=O) to a compound
of carboxylic acids are also common acylating agents. In some cases, active esters exhibit comparable reactivity.[citation needed] Amides are hard to activate
Acylation
Czech stage designer, author and screenwriter (1923–1996)
Ester Krumbachová (12 November 1923 – 13 January 1996) was a Czech screenwriter, costume designer, stage designer, author and director. She is known for
Ester_Krumbachová
Chemical compound
benzoic acid esters Hansl NR (March 1974). "A novel spasmolytic and CNS active agent: 3-(2-benzylmethylamino ethyl) benzoic acid methyl ester hydrochloride"
PRL-8-53
Pharmaceutical compound
active ingredient in e-cigarette liquids marketed under names such as space oil or kpods. It has a sec-butyl ester group in place of the ethyl ester of
Sec-butomidate
Psychedelic drug
However, it is less active than anticipated, perhaps due to its high lipophilicity and, by extension, high plasma protein binding and ester hydrolysis into
O-Pivalylbufotenine
Israeli nanotechnology researcher
Ester H. Segal (Hebrew: אסתר סגל) is an Israeli nanotechnology researcher and professor in the Department of Biotechnology and Food Engineering at the
Ester_H._Segal
Organic compound (CH3CO2CH2CH3)
and the decaffeination process of tea and coffee. Ethyl acetate is the ester of ethanol and acetic acid; it is manufactured on a large scale for use
Ethyl_acetate
Chemical compound
Diethyl malonate, also known as DEM, is the diethyl ester of malonic acid. It occurs naturally in grapes and strawberries as a colourless liquid with
Diethyl_malonate
Pharmaceutical product
Omega-3-acid ethyl esters are a mixture of ethyl eicosapentaenoate and ethyl docosahexaenoate, which are ethyl esters of the omega−3 fatty acids eicosapentaenoic
Omega-3-acid_ethyl_esters
American organic chemist (born 1977)
including activated olefins (Giese-type additions), alkyl halides, redox-active esters, (hetero)aryl halides, alkenyl halides, alkynyl halides, and trifluoromethylating
Phil_S._Baran
Rupture in a planet's crust where material escapes
jvolgeores.2008.01.033. Troll, Valentin R.; Deegan, Frances M.; Jolis, Ester M.; Budd, David A.; Dahren, Börje; Schwarzkopf, Lothar M. (March 2015).
Volcano
hydrolysable tannins. Specifically, tannase catalyzes the hydrolysis of ester and depside bonds of hydrolysable tannins to release glucose and gallic
Tannase
Chemical compound
6-propionylmorphine, an active opioid which is an ester of morphine first produced along with heroin and numerous other mono-, di-, and tetra- esters of morphine
Acetylpropionylmorphine
Organic compound of the form R–B(OH)2
([B(OH2)]2). Boronic esters are esters formed between a boronic acid and an alcohol. The compounds can be obtained from borate esters by condensation with
Boronic_acid
Census-designated place in Alaska, United States
miners. The Ester Volunteer Fire Department, John Trigg Ester Library, Ester Historic Society and Ester Post Office serve residents in Ester and surrounding
Ester,_Alaska
Chemical compound
maintenance dosing protocol. (Creatine supplements are marketed in ethyl ester, gluconate, monohydrate, and nitrate forms.) According to a 2018 review
Creatine
Chemical compound
the human intestine to active retinol after ingestion. Commercially, retinyl acetate is the second most common retinyl ester after retinyl palmitate
Retinyl_acetate
Category of polymers, in which the monomers are joined together by ester links
Polyester is a category of polymers that contain one or two ester linkages in every repeat unit of their main chain. As a specific material, it most commonly
Polyester
Bile acid
PMID 21824545. Christensen JB (2001). "A Simple Method for Synthesis of Active Esters of Isonicotinic and Picolinic Acids". Molecules. 6 (12): 47–51. CiteSeerX 10
Deoxycholic_acid
Organic compound
as a precursor for other organic compounds such as ethyl halides, ethyl esters, diethyl ether, acetic acid, and ethyl amines. As ethanol also has a low
Ethanol
Class of enzymes which split esters into an acid and alcohol via hydrolysis
In biochemistry, an esterase is a class of enzyme that splits esters into an acid and an alcohol in a chemical reaction with water called hydrolysis (and
Esterase
Chemical acid found in vinegar
The name "acetate" can also refer to a salt containing this anion, or an ester of acetic acid. (The symbol Ac for the acetyl functional group is not to
Acetic_acid
13-diester 12-ester hydrolase, and PDEH. Shoyab M, Warren TC, Todaro GJ (1981). "Isolation and characterization of an ester hydrolase active on phorbol diesters
Phorbol-diester_hydrolase
Chemical compound
for the synthesis of primary amides of amino acids and peptides from active esters". International Journal of Peptide and Protein Research. 42 (1): 53–57
Methanediamine
Anabolic steroid
itself was never marketed for human use. [clarification needed] Trenbolone ester prodrugs, including trenbolone acetate (brand names Finajet, Finaplix, others)
Trenbolone
Local anaesthetic drug
anesthetic, belonging to the amino ester drug class, commonly used as a topical painkiller or in cough drops. It is the active ingredient in many over-the-counter
Benzocaine
Protein-coding gene in humans
an active visual pigment. RPE65 reverses the photoisomerization by converting an all-trans-retinyl ester to 11-cis-retinol. Most commonly, the ester substrate
RPE65
Chemical compound
minoxidil sulfate ester or minoxidil N-O-sulfate, is an active metabolite of minoxidil (Rogaine, Loniten, others) and is the active form of this agent
Minoxidil_sulfate
Medication
it became the second fish oil-based medication after omega-3-acid ethyl esters (brand named Lovaza, itself approved in 2004). In December 2019, the FDA
Ethyl_eicosapentaenoic_acid
Chemical compound
"Practical Ni-Catalyzed Aryl–Alkyl Cross-Coupling of Secondary Redox-Active Esters". Journal of the American Chemical Society. 138 (7): 2174–2177. Bibcode:2016JAChS
Nickel(II)_chloride
Type of peptides
ISBN 978-4-431-54836-2. S2CID 82050024. Jansson A. M.; Meldal M.; Bock K. (1990). "The Active Ester N-Fmoc-3-O-[Ac4-Alpha-D-Manp-(1-]2)-Ac3-Alpha-D-Manp-1-]-Threonine-O-Pfp
Glycopeptide
depression formed on June 3, it entered the PAR on June 4, gaining the name Ester, a few hours later, JTWC classified it as a subtropical depression before
Tropical_cyclones_in_2026
Filipina activist (1916–1997)
Ester Dolores Erquiaga Misa Paredes Jimenez (April 14, 1916 – September 4, 1997) was a Filipina activist best known for her contributions to the resistance
Ester_Paredes_Jimenez
Prodrug
Omberacetam, also known as N-phenylacetyl-l-prolylglycine ethyl ester, is promoted as a nootropic and is a prodrug of cyclic glycine-proline. Other names
Omberacetam
English television presenter (born 1940)
Somerville College, Oxford Occupations Journalist television presenter Years active 1968–present Spouse Desmond Wilcox (m. 1977; died 2000) Children 3
Esther_Rantzen
Italian soprano (1883–1982)
Ester Mazzoleni (12 March 1883 – 17 May 1982) was an Italian soprano active on the opera stage from 1906 until her retirement in 1926. She continued to
Ester_Mazzoleni
Chemical compound
decarboxylase of lactobacillus 30a: inactivation and active-site labeling by L-histidine methyl ester". Biochemistry. 15 (19): 4180–5. doi:10.1021/bi00664a008
Histidine_methyl_ester
Slovak ethnographer (1928–2011)
Ester Plicková (2 July 1928 – 1 December 2011) was a Slovak ethnographer and photographer with a specialty in folk pottery. Working as an ethnographer
Ester_Plicková
Chemical compound (CH2CH2CO2CH3)2
precursor for the production of pharmaceutical active ingredients and as a component of dibasic esters. Record in the GESTIS Substance Database of the
Dimethyl_adipate
and playing around of the song, "Let It Grow (Celebrate the World)" by Ester Dean before the credits roll. Vettai In a post-credits scenes, show that
List of films with post-credits scenes
List_of_films_with_post-credits_scenes
Substance that lowers surface tension
gas, or a liquid and a solid. The word surfactant is a blend of "surface-active agent", coined in 1950. As they consist of a water-repellent and a water-attracting
Surfactant
Italian actress (c. 1904–1996)
Ester Carloni (born as Esterina Carloni) (c. 1904 – 6 April 1996) was an Italian actress. She appeared in more than forty films from 1958 to 1992. Her
Ester_Carloni
Organic compounds with the structure O=P(OR)3
In organic chemistry, organophosphates (also known as phosphate esters, or OPEs) are a class of organophosphorus compounds with the general structure O=P(OR)3
Organophosphate
Chemical compound
cases of active ingredients like fingolimod, which is used to treat multiple sclerosis. A notable method for synthesizing acetamidomalon ester is described
Diethyl_acetamidomalonate
Polymer researcher and chemistry PhD
synthetic and biological substances. In 2022, the group developed Polyolefin Active Ester Exchange (PACE) process to give access to polyolefin block copolymers
Eva_Harth
English actress (born 1997)
production of Billy Elliot the Musical. Her first TV role was the minor role of Ester, Small Dark Places. She then starred in Holby City as Abi Taylor for one
Mia_McKenna-Bruce
Any salt of an organic base and hydrochloric acid
acids. Glycine methyl ester hydrochloride is a shelf-stable salt that can be readily converted to a reactive glycine methyl ester, a compound that is not
Hydrochloride
Derivative of tetrahydrocannabinol
the less active but more stable isomer Δ8-THC was used, but the same reaction scheme could be used to make the phosphate ester of the more active isomer
THC-O-phosphate
Chemical compound
intramuscular injection. The ester group is slowly hydrolyzed by metabolic enzymes, releasing steady doses of the active ingredient. Examples include
Cypionic_acid
Chemical compound
soaking. Pentachlorophenol esters can be used as active esters in peptide synthesis, much like more popular pentafluorophenyl esters. People may be exposed
Pentachlorophenol
Spanish poet, writer, and videoartist (1960–2024)
Ester Xargay Melero (Sant Feliu de Guíxols, 12 April 1960 – Palamós, 19 January 2024) was a Catalan poet, video artist, translator and cultural agitator
Ester_Xargay_Melero
Metabolic pathway involving the transfer of a thiol group
activated homoserine ester O-succinylhomoserine sulfhydrylase (metZ) which adds a thiol group to an activated homoserine ester in the reverse transsulfurylation
Transsulfuration_pathway
British politician Peter Enzenauer (1878–1951), Canadian politician Peter Ester (1953–2022), Dutch sociologist and politician Peter Estlin (born 1961),
List of people with given name Peter
List_of_people_with_given_name_Peter
Chilean writer and illustrator (1914–2001)
Ester Cosani Sologuren (24 December 1914 – March 2001), known by the pen name Rita Cosani, was a Chilean writer and illustrator. Active during the late
Ester_Cosani
American actress (born 1982)
Alan (May 11, 2015). "Pitch Perfect 2 Crazy Youngsters Music Video with Ester Dean". MovieWeb. Retrieved March 21, 2026. "Pitch Perfect 3 x The Voice
Anna_Camp
Distilled alcoholic beverage made from sugarcane
concentration of congeners and esters. The employment of pot stills is the preferred method of rum production, which preserves the esters and congeners and creates
Rum
Chemical compound
estrogenic effects or risk of liver damage. Metenolone enanthate is a metenolone ester and a long-lasting prodrug of metenolone in the body. Metenolone enanthate
Metenolone_enanthate
Danish academic (born 1972)
Ester Barinaga (born 1972) is a professor of social entrepreneurship at Lund University Sweden. She works primarily in the areas of social innovation
Ester_Barinaga
Chemical compound
the Euphorbiaceae and Thymelaeaceae families. Phorbol and phorbol esters are the active constituents of the highly toxic New World tropical manchineel tree
Phorbol
Chemical compound
Fura-2-acetoxymethyl ester, often abbreviated Fura-2AM, is a man-made membrane-permeant derivative of the ratiometric calcium indicator Fura-2 used in
Fura-2-acetoxymethyl_ester
Chemical compound
estrogen ester – specifically, the triacetate ester of estriol – which was never marketed. It has been said to be 10 times as physiologically active as estriol
Estriol_triacetate
Spanish jazz singer (born 1976)
Ester Andujar (in Spanish, Andújar), born 1976 in Valencia, is a Spanish jazz singer notable among the younger generation of Spanish jazz musicians. She
Ester_Andujar
Chemical compound and chemical warfare nerve agent
in two competing solvolysis reactions: cleavage of either the P–O or P–S esters. Although the P–S cleavage is the dominant pathway, the product of P–O bond
VX_(nerve_agent)
Volcano in Bali, Indonesia
Daya West Bali National Park Geiger, Harri; Troll, Valentin R.; Jolis, Ester M.; Deegan, Frances M.; Harris, Chris; Hilton, David R.; Freda, Carmela
Mount_Batur
Chemical group (>N–C(=O)–O–)
carbamic acid (NH2COOH). The term includes organic compounds (e.g., the ester ethyl carbamate), formally obtained by replacing one or more of the hydrogen
Carbamate
ACTIVE ESTER
ACTIVE ESTER
Boy/Male
Indian
Active
Girl/Female
Slavic
Active.
Male
English
Pet form of English Ace, ACIE means "number one."
Girl/Female
German
Active.
Male
English
English pet form of Celtic Arthur, possibly ARTIE means "bear-man."Â
Girl/Female
German
Active.
Girl/Female
German
Active.
Boy/Male
British, English, Indian, Russian
Work
Boy/Male
Muslim
Active
Boy/Male
Polish
Active.
Girl/Female
Hindi
Active.
Boy/Male
English
Active.
Boy/Male
French American
Born eighth.
Male
English
English surname transferred to forename use, from the name of various places, derived from Old English clif, CLIVE means "bank, cliff, slope."
Boy/Male
English
Active.
Girl/Female
Greek
Active.
Surname or Lastname
English
English : habitational name from any of various places, for example in Shropshire and Cheshire, named Clive, from the dative case of Old English clif ‘slope’, ‘bank’, ‘cliff’ (see Cliff), originally used after a preposition. In some cases the name may be topographical, with the same origin and meaning.
Boy/Male
Teutonic American English
Active.
Boy/Male
English
Active.
Girl/Female
Greek
Active.
ACTIVE ESTER
ACTIVE ESTER
Girl/Female
Indian
It's an Ancient City Where Siddharth was Born; She's the Greatest and the Princess of Vaishala
Boy/Male
Indian, Sanskrit
Bird
Girl/Female
Christian & English(British/American/Australian)
Solitary
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Oriya, Punjabi, Sanskrit, Sikh, Telugu
Right; Truth; Liberty; Freedom; Own Country
Girl/Female
Hindu, Indian, Sanskrit
Owner of Champak Tree
Boy/Male
Muslim
Running luck
Surname or Lastname
English
English : variant spelling of Emery.
Girl/Female
Irish
Protective.
Boy/Male
Indian
Singer
Girl/Female
Hindu
Name of a Raga
ACTIVE ESTER
ACTIVE ESTER
ACTIVE ESTER
ACTIVE ESTER
ACTIVE ESTER
adv.
In an active signification; as, a word used actively.
a.
Given to action; constantly engaged in action; energetic; diligent; busy; -- opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
a.
Acting in concurrence; united in action.
n.
Action.
a.
Not disposed to action or effort; not diligent or industrious; not busy; idle; as, an inactive officer.
a.
Applied to all verbs that express action as distinct from mere existence or state.
a.
Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to passive, that receives; as, certain active principles; the powers of the mind.
adv.
In an active manner; nimbly; briskly; energetically; also, by one's own action; voluntarily, not passively.
a.
Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
a.
Not active; having no power to move; that does not or can not produce results; inert; as, matter is, of itself, inactive.
v. t.
To make active.
a.
Not active; inert; esp., not exhibiting any action or activity on polarized light; optically neutral; -- said of isomeric forms of certain substances, in distinction from other forms which are optically active; as, racemic acid is an inactive tartaric acid.
a.
Given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman.
a.
Applied to a form of the verb; -- opposed to passive. See Active voice, under Voice.
n.
Any one of the active processes going on in an organism; the performance of a function; as, the action of the heart, the muscles, or the gastric juice.
a.
Brisk; lively; as, an active demand for corn.
a.
Implying or producing rapid action; as, an active disease; an active remedy.
a.
Requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes.
a.
Doing; active.
a.
In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.