Define Carboxylic acid ester. Carboxylic acid ester synonyms, Carboxylic acid ester pronunciation, Carboxylic acid ester translation, English dictionary definition of Carboxylic acid ester. n. Any of a class of compounds derived from an oxyacid, usually
From - di-carboxylic acid ester and olefin Characteristic unsaturated chemical compound production manner null of the constituent and the said constituent whichPURPOSE: To prepare a composition that has a low pour-point and is suitable for lubricants (additives) by incorporating therein a medium-...
An alcohol and/or a carboxylic acid ester is (are) produced from a C. sub.2 to C.sub.12 carboxylic acid by contacting the carboxylic acid at elevated temperature and pressure with hydrogen in the presence of a heterogeneous catalyst char... M Kitson,PS Williams - US 被引量: 216发表: ...
NEW MATERIAL:The compound of formula[R is indanyl, coumaryl, indolyl, quinolyl, etc. which may have esubstituent group (lower alkyl or phenyl)]and its acid addition salt. EXAMPLE:trans-4-Guanidinomethylcyclohexanecarboxylic acid 5'-indanyl ester hydrochloride. USE:A protease-inhibiting agent. It...
Esters derived from carboxylic acids are the most common. The term ester was introduced in the first half of the 19th century by German chemist Leopold Gmelin. Carboxylic acid esters, formula RCOOR′ (R and R′ are any organic combining groups), are commonly prepared by reaction of carboxylic...
carboxylic acid: Carboxylic esters The hydrolysis of esters in the presence of alkalies such as potassiumhydroxide(lye) or sodium—a reaction calledsaponification—is utilized in the preparation of soaps from fats and oils and is also used for the quantitative estimation of esters. Wet chemical fir...
A process for poly(ester-carbonates) from dihydric phenols, especially bisphenol A; aromatic or cycloaliphatic dicarboxylic acids, especially terephthalic acid; and phosgene as carbonate precursor wherein a reaction of the acid and phosgene is carried out in a first stage forming dicarboxylic acid chl...
Enantiomers of optically active carboxylic acids have been separated following acid-catalysed esterification with a chiral alcohol such as S(+)-2-butanol, R(−)-2-octanol, or (−)-methanol or transesterification with sodium menthylate. Diastereometric esters have also been prepared from optically...
The meaning of ORTHO ESTER is an ester of an ortho acid; especially : an ester RC(OR')3 (as orthoformic ester) of an ortho-carboxylic acid.
(3.1.1.13). Cholesterol esterase is also calledcarboxylic ester hydrolaseor sterol ester hydrolase. It has been purified from porcine[81,82], rat[83], and human pancreas[84,85]. Humancholesterol esterasehas a molecular weight of about 100 kDa[84], whereas rat cholesterol esterase has a ...