Ethyl acetate structure CAS No. 141-78-6 Chemical Name: Ethyl acetate Synonyms EtOAc;ETOH;ALCOHOL;yisuanyizhi;ETHYL ETHANOATE;ACETIC ACID ETHYL ESTER;ETHANOL ABSOLUTE;METHYLATED SPIRIT;CH3COOC2H5;ACETIC ETHER CBNumber: CB7255315 Molecular Formula: ...
A method for purifying ceftizoxime sodium, comprising (1) dissolving crude ceftizoxime sodium in water, extracting with cyclohexane or ethyl acetate, and acquiring an aqueous phase having ceftizoxime sodium; (2) introducing ammonia or ammonium hydroxide, stirring, filtering, and optionally heating to re...
Whey is just turning from a waste of milk processing to a renewable raw material in biotechnology for producing single-cell protein, bio-ethanol, or ethyl acetate as an economic alternative. Conversion of whey-borne sugar into ethyl acetate requires yeast biomass as a biocatalyst. A high cell c...
Stage #2: ethyl acetate With boron trifluoride diethyl etherate In tetrahydrofuran; hexane at -78℃; for 0.5h; Inert atmosphere;Stage #3: With water; ammonium chloride In tetrahydrofuran; hexane at -78 - 20℃; 96% Stage #1: phenylacetylene With n-butyllithium In tetrahydrofuran; hexane at -...
Chromatographic separation was performed on a C column by isocratic elution with acetonitrile and 5mM ammonium acetate containing 0.03% ammonium hydroxide (70:30, ), at a flow rate of 0.3mLmin. MS detection was performed on an API 3000 triple quadrupole mass spectrometer operating in ESI positive...
Ethyl acrylate manufacturers Ethyl acrylate $100.00/ 25KG 2024-10-31 CAS:140-88-5 Min. Order: 1KG Purity: 99%min Supply Ability: 50tons Ethyl Acrylate $0.00/ 200kg 2024-10-29 CAS:140-88-5 Min. Order: 20kg Purity: 99.5% Supply Ability: 20 tons ...
In a separate vessel, 12.9 parts ion-exchanged zirconyl acetate (Magnesium Elektron Inc.) were diluted with 20 parts deionized water and the resultant solution acidified with 0.255 parts concentrated nitric acid. The silica sol was pumped into the stirred zirconyl acetate solution and mixed for one...
With acetonitrile/5 mmol/L ammonium acetate solution as the eluent and 1 mL/min as the flow rate on a C18 column, the derivatives were eluted at 10.6 and 14.8 min. Good linearity (correlation coefficients > 0.999) and low limits of quantitation (0.6 ppm) were obtained. The recoveries were...
References[1] Muhammad Ajmal . “Betaine microgel preparation from 2-(methacryloyloxy) ethyl] dimethyl (3-sulfopropyl) ammonium hydroxide and its use as a catalyst system.” Colloids and Surfaces A: Physicochemical and Engineering Aspects 486 (2015): Pages 29-37. ...
The crude residue was purified by column chromatography, (petroleum ether: ethyl acetate 1:1) to afford 0.25 g (36% yield) of the title compound. 1H NMR (300 MHz, DMSO-d6 + TFA): 7.17 (t, 1 H), 6.61 - 6.89 (m, 3 H), 3.94 (t, 2 H), 3.56 (s, 2 H), 3.47 (s, 3 ...