Nugier-Chauvin.Enantiomeric excess determination of somechiral sulfoxides by NMR: use of (S)-Ibuprofen and (S)-Naproxen as shiftreagents. Tetrahedron Letters . 1997L. Fauconnot,C. Nugier-Chauvin.Enantiomeric excess determination of somechiral sulfoxides by NMR: use of (S)-Ibuprofen and (S)-...
In this paper, a method using one time injection to determine enantiomeric excess and conversion of the stereoselective esterification of racemic ibuprofen with n butanol catalyzed by lipase was developed with a commercially available HPLC CSP column Regis( S, S ) Whelk 01. 以脂肪酶在正己烷中催...
2.In this paper, a method using one time injection to determine enantiomeric excess and conversion of the stereoselective esterification of racemic ibuprofen with n butanol catalyzed by lipase was developed with a commercially available HPLC CSP column Regis( S, S ) Whelk 01.以脂肪酶在正己烷中催...
In this paper, a method using one-time injection to determine enantiomeric excess and conversion of the stereoselective esterification of racemic ibuprofen with n-butanol catalyzed by lipase was developed with a commercially available HPLC CSP column Regis(S, S) Whelk-01. In the linear range of ...
Using ibuprofen, it has been demonstrated that enantiomeric excess determinations are possible down to a 1% level of optical contamination and stereoselective determinations are still possible with a good precision near the detection limit, ... A D'Hulst,N Verbeke - 《Electrophoresis》 被引量: 83发...
A method for the quantification of the enantiomeric excess of two pharmaceutical active ingredients (ibuprofen and epinephrine) in the solid state based on coupling near infrared spectroscopy and chemometrics is proposed. In the case of ibuprofen, in the absence of excipients, the method resulted in...
Using photoelectron elliptical dichroism (PEELD) to determine real‐time variation of enantiomeric excesscamphorfenchoneFourieribuprofenPECDphotoionizationultrafastIn this work, the photoionization of chiral molecules by an elliptically polarized, high repetition rate, femtosecond laser is probed. The resulting...
Sensor arrays composed of four cinchona ammonium salts are used for quantitative analysis of ee in several non-steroidal anti-inflammatory drugs (NSAIDs), such as enantiomers of ibuprofen, ketoprofen, and naproxen.AliAkdenizLorenzoMoscaTsuyoshi
-Naproxen? and ( S )-Ibuprofen? chlorides—convenient chemical derivatizing agents for the determination of the enantiomeric excess of hydroxy and aminophosphonates by 31 P NMR[J] . Tetrahedron: Asymmetry . 2002 (7)BIazewska K, Gajda T. (S)-Naproxen and (S)-Ibuprofen chlorides-convenient ...
chemical derivatizing agents for the determination of the enantiomeric excess of hydroxy and aminophosphonates by 31 P NMRThe acid chlorides of ( S )-Naproxen and ( S )-Ibuprofen are shown to be convenient chiral derivatizing agents for determination of the enantiomeric purity of diethyl 1-...