In chemistry, racemization is a conversion, by heat or by chemical reaction, of an optically active compound into a racemic (optically inactive) form...

A raceme (/reɪˈsiːm, rə-/) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots...

undergo "umbrella inversion" at room temperature, leading to racemization. If the racemization is fast enough, the molecule can often be treated as an achiral...

(same as optical isomerism) Descriptor (chemistry) Racemic (protein) crystallography Racemization Skeletal formula § Stereochemistry which describes how...

racemization. Thus, measuring the ratio of D to L in a sample enables one to estimate how long ago the specimen died. The rate at which racemization proceeds...

dextroamphetamine. Amphetamine properly refers to a specific chemical, the racemic free base, which is equal parts of the two enantiomers in their pure amine...

activation opens the possibility for racemization of the activated amino acid. Racemization can be circumvented with 'racemization suppressing' additives such...

A foxtail is a spikelet or cluster of a grass, that serves to disperse its seeds as a unit. Thus, the foxtail is a type of diaspore or plant dispersal...

(HOAt) is a triazole used as a peptide coupling reagent. It suppresses racemization that can otherwise occur during the reaction. HOAt has a melting point...

energy than the transition states for hydrogenation, resulting in rapid racemization and high yields of a single enantiomer of the product. The enantiomers...

the racemization is 14.5 min. at 50 °C. Substituted derivatives of this parent species, e.g. binaphthol, exhibit much higher barriers to racemization. Pu...

Racemic crystallography is a technique used in structural biology where crystals of a protein molecule are developed from an equimolar mixture of an L-protein...

Nepeta racemosa, the dwarf catnip or raceme catnip, syn. N. mussiniii, is a species of flowering plant in the mint family Lamiaceae, native to the Caucasus...

(pKa 4.60) and suppresses base catalyzed side reactions, in particular racemization. Ethyl cyanohydroxyiminoacetate is obtained in the reaction of ethyl...

Racemic acid is an old name for an optically inactive or racemic form of tartaric acid. It is an equal mixture of two mirror-image isomers (enantiomers)...

Methamphetamine properly refers to a specific chemical substance, the racemic free base, which is an equal mixture of levomethamphetamine and dextromethamphetamine...

process is known as RRR synthesis in which the R's stand for Resolution-Racemization-Recycle. Antimony potassium tartrate, an anion, that forms diastereomeric...

chirality of the acetate center at a rate fast enough to ensure complete racemization. When this is achieved the CALB enzyme selectively hydrolyzes the (R)...

actually predominate in some commercial supplement preparations. Amino acid racemization in aqueous media is a well-established chemical process promoted by elevated...

It is the "left-handed" (levorotatory) stereoisomer of racemorphan, the racemic mixture of the two stereoisomers with differing pharmacology. The "right-handed"...

HOBt is explosive.[citation needed] It is mainly used to suppress the racemization and to improve the efficiency of peptide synthesis. Automated peptide...

compound raceme Melilotus officinalis (homoeothetic compound raceme) Heterothetic compound raceme Veronica albicans (heterothetic compound raceme) Compound...

a value near 0 towards an equilibrium value near 1, a process called racemization. Thus, measuring the ratio of D to L in a sample enables one to estimate...

(v.3 - Jan 2020), retrieved 2020-07-31 J L Bada (1985). "Amino Acid Racemization Dating of Fossil Bones". Annual Review of Earth and Planetary Sciences...

chirality due to restricted rotation (atropisomerism). The barrier to racemization is high due to steric hindrance, which limits rotation about the bond...

(second step) may occur from either side to give a racemic product, but actually complete racemization does not take place. This is because the nucleophilic...

of acylamino acids with amino acid esters in high yield and without racemization. It is also an irreversible dopamine transporter (DAT) blocker in vitro...

These methods include lichenometry, dendrochronology, and amino-acid racemization. Geoarchaeology Geomorphology Hydrology Neotectonics Palynology Sedimentology...

(having a single stem per flower). The branches of a panicle are often racemes. A panicle may have determinate or indeterminate growth. This type of inflorescence...

leaflets with the narrower end towards the base, and racemes of usually red flowers in racemes of 2 to 6. Swainsona formosa is a prostrate annual or...