Cool the solution on ice. With stirring, add an amount ofacetic anhydrideequal to the mass of macromolecule to be modified. Alternatively, add a 10-fold molar excess of acetic anhydride over the amount of amines present. The addition of the anhydride slowly or in several aliquots over the co...
Which functional group(s) is not present in the molecule below? a. Haloalkane b. Ketone c. Ether d. Ester Identify the functional group in the given compound. A. carboxylic anhydride B. carboxylic ester C. carboxylic acid D. amide
Acetic acidis an important bulk chemical, used as raw material in the production of vinyl acetate, terephtalic acid, acetate esters and acetic anhydride. All these processes include a step for separating the acetic acid from water, both high-purity and high-recovery of acetic acid being require...
2-chloro-2,2-difluoroacetic anhydride; 2-Chloro-2,2-difluoroacetyl 2-chloro-2,2-difluoroacetate; Acetic acid, 2-chloro-2,2-difluoro-, 1,1′-anhydride; Acetic acid, chlorodifluoro-, anhydride; Bis(chlorodifluoroacetic)anhydride; Chlorodifluoroacetic anhyride; Difluorochloroacetic anhydride...
6,127,432 describes processes for the conversion of a feedstock comprising carbon monoxide and hydrogen to a product stream comprising at least one of an ester, acid, acid anhydride and mixtures thereof. U.S. Pat. No. 6,127,432 also describes a process for converting an alcohol, ether and...
Method of treating wood with a composition comprising acetic anhydride to produce acetylated wood. The composition also contains at least one marker compound of a heterocyclic compound where the heteroatom is N or O, or a compound containing carbon, hydrogen and a functional group of either nitro ...
Acetic acid, 2-chloro-2,2-difluoro-, ethyl ester; Acetic acid, chlorodifluoro-, ethyl ester; Acetic acid,2-chloro-2,2-difluoro-, ethyl ester; Chlorodifluoroaceticacidethylester; Difluorochloroacetic acid ethyl ester; EINECS 206-850-0; Ethyl 2-chloro-2,2-difluoroacetate; Ethyl 2-chloro...
or propanephosphonic anhydride; or isobutyl chloroformate, or bis(2-oxo-3-oxazolidinyl)phosphoryl chloride or benzotriazolyloxy-tri(dimethyl-amino)phosphonium hexafluorophosphate, or O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HBTU), 2-(2-oxo-1-(2H)-pyridyl)-1,1,...
(98%), acetic anhydride (99%), 2-hydroxy-1,4-naphthoquinone (Henna, 98%), hydrazine (N2H4, 80%), 4′-chloroacetophenone (C8H7Cl, 98%), and various ketone derivatives (95%) were purchased from Merck and Sigma-Aldrich. Furthermore, all solvents such as tetrahydrofuran (THF 99%), ...
Cyclohexyl EDTA monoanhydride (CDTAMA) can be derivatized by converting one and only one of the carboxyl groups to a moiety that is also capable of conjugation to antibodies, such as the N-hydroxysuccinimide ("NHS") ester (the compound of formula I wherein R is ##STR2## The reaction of...