Synthesis and characterization of organic conductors derived from (1H-pyrrol-3-yl)acetic acid esters

1996 ◽  
Vol 6 (7) ◽  
pp. 1107
Author(s):  
Anh Ho-Hoang ◽  
Emmanuelle Schulz ◽  
Fabienne Fache ◽  
Giselle Boiteux ◽  
Marc Lemaire
Keyword(s):  
Acetic Acid ◽  
Organic Conductors ◽  
Synthesis And Characterization ◽  
Acetic Acid Esters ◽  
Acid Esters

Isolierung und Charakterisierung einer Acetylester-Hydrolase aus Aspergillus rtiger / Isolation and Characterization of an Acetylester-Hydrolase from Aspergillus niger

1980 ◽  
Vol 35 (9-10) ◽  
pp. 696-698 ◽  
Author(s):  
B. Schöbel ◽  
W. Pollmann
Keyword(s):  
Molecular Weight ◽  
Acetic Acid ◽  
Temperature Optimum ◽  
Isolation And Characterization ◽  
Glyceryl Triacetate ◽  
Characteristic Features ◽  
The Stability ◽  
Acetic Acid Esters ◽  
Acid Esters

Abstract The characteristic features of an acetic acid esters hydrolyzing enzyme (acetylesterase, EC 3.1.1.16) are described. The pH- and temperature optimum were 7.0 and 40 °C respectively. The stability of the enzyme regarding different pH- and temperature conditions was investigated. The molecular weight of the acetylesterase could be determined to 160000. A small acetic ester hydrolyzing activity was found too with a molecular weight of about 25000. The activity was not inhibited by addition of di-isopropylphosphorofluoridate (DFP) or physostigmine. The KM-value for glyceryl triacetate was about 90 mM. Concentration of the enzyme was done by ultrafiltration and column-chromatography. The enzymatic activity tests were performed titrimetrically using glyceryl triacetate for substrate.

scholarly journals Tautomerisation in 1-(4-Methylphenylazo)naphthalen-2-ol and 2-(4-Methylphenylazo)-4-methylphenol: A Crystallographic and 13C{1H}NMR Study

1999 ◽  
Vol 23 (3) ◽  
pp. 178-179
Author(s):  
Wendy I. Cross ◽  
Kevin R. Flower ◽  
Robin G. Pritchard
Keyword(s):  
Acetic Acid ◽  
Nmr Spectroscopy ◽  
Resonant Frequency ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Nmr Study ◽  
Acetic Acid Esters ◽  
Acid Esters ◽  
Equivalent Carbon

The acetic acid esters of 1-(4-methylphenylazo)naphthalen-2-ol 1 and 2-(4-methylphenylazo)-4-methylphenol 3 are prepared and characterised by single crystal X-ray diffraction studies and 13C{1H}NMR spectroscopy; the position of the C(2)13C resonance for the ester is used to predict the position of resonant frequency of the equivalent carbon in the parent alcohols and hence, calculate the position of the azo-hydrazone equilibrium in these compounds.

ChemInform Abstract: Anionic Derivatives of Pentafluoro-λ6-sulfanyl (Fluorosulfonyl) Acetic Acid Esters.

ChemInform ◽  
2010 ◽  
Vol 25 (7) ◽  
pp. no-no
Author(s):  
R. WINTER ◽  
G. L. GARD ◽  
R. MEWS ◽  
M. NOLTEMEYER
Keyword(s):  
Acetic Acid ◽  
Derivatives Of ◽  
Acetic Acid Esters ◽  
Acid Esters

Synthesis and Characterization of Diaminodithio- and Aminotrithiophosphoric Acid Esters

2007 ◽  
Vol 182 (6) ◽  
pp. 1233-1244 ◽  
Author(s):  
Patrice Marchand ◽  
Anca Meffre ◽  
Bruno Donnadieu ◽  
Daniel Taton ◽  
Yves Gnanou ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Acid Esters
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