Results 321 to 330 of about 420,886 (376)
Some of the next articles are maybe not open access.
Polyethylene glycol derivatives of procaine
Journal of Medicinal Chemistry, 1973AbstractPolyäthylenglykole (I) geben mit Phosgen die Chlorkohlensäureester (III), di mit Procain zu (IV) amidiert werden.
Albert Zilkha, Ben-Zion Weiner
openaire +4 more sources
Modification of polyethylene glycol
European Polymer Journal, 1988Abstract The products of the oxidation of the hydroxyl groups of polyethylene glycol with a mixture of dicyclohexyl carbodiimide, dimethylsulphoxide and o -phosphoric acid in CHCl 3 or CCl 4 at room temperature (Pfitzner-Moffatt reaction) have been studied.
V.P. Zubov, A.I. Kuzaev, I.N. Topchieva
openaire +2 more sources
Amide bond-containing monodisperse polyethylene glycols beyond 10 000 Da.
Organic and biomolecular chemistry, 2016Although monodisperse polyethylene glycols (M-PEGs) above 4000 Da are especially valuable in biomedical applications, their synthesis remains a long-standing challenge. To this end, a peptide-based strategy for such M-PEGs was developed. With macrocyclic
Zihong Wan +9 more
semanticscholar +1 more source
Journal of Separation Science, 2016
The separation of polyethylene glycols and maleimide-substituted polyethylene glycol derivatives based on the number of maleimide end-groups under critical liquid chromatography conditions has been investigated on a reversed-phase column.
Yanzhen Wei, R. Zhuo, Xulin Jiang
semanticscholar +1 more source
The separation of polyethylene glycols and maleimide-substituted polyethylene glycol derivatives based on the number of maleimide end-groups under critical liquid chromatography conditions has been investigated on a reversed-phase column.
Yanzhen Wei, R. Zhuo, Xulin Jiang
semanticscholar +1 more source
, 2017
Copolymers of polyhydroxyalkanoates (PHAs) and polyethylene glycols (PEGs) have gained high significance for biological and medical applications within the past few years.
Malte Winnacker, B. Rieger
semanticscholar +1 more source
Copolymers of polyhydroxyalkanoates (PHAs) and polyethylene glycols (PEGs) have gained high significance for biological and medical applications within the past few years.
Malte Winnacker, B. Rieger
semanticscholar +1 more source
A & A case reports, 2015
We describe hypersensitivity to polyethylene glycols (PEGs), with cross-reactivity to a structural analog, polysorbate 80, in a 69-year-old patient with perioperative anaphylaxis and subsequent, severe anaphylactic reactions to unrelated medical products.
E. Wenande +3 more
semanticscholar +1 more source
We describe hypersensitivity to polyethylene glycols (PEGs), with cross-reactivity to a structural analog, polysorbate 80, in a 69-year-old patient with perioperative anaphylaxis and subsequent, severe anaphylactic reactions to unrelated medical products.
E. Wenande +3 more
semanticscholar +1 more source
The densities of polyethylene glycols
Chemical Engineering Science, 1989Abstract The densities of five polyethylene glycols (ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and pentaethylene glycol) at temperatures between 398 and 423 K were measured using a vibrating tube densitometer and are reported in this paper.
Wahid Y. Tawfik, Amyn S. Teja
openaire +2 more sources
Esterification of Polyethylene Glycols
Journal of Macromolecular Science: Part A - Chemistry, 1984Abstract Esterification of polyethylene glycols by various carboxylic acids in high yield and high substitution levels is described. The esterification reaction is achieved by dicyclohexylcarbodiimide and catalyzed by dimethylaminopyridine. Rate measurements indicated that the reaction is complete after 2 h at room temperature.
Albert Zilkha +2 more
openaire +2 more sources
Lyophilization of polyethylene glycol mixtures
Journal of Pharmaceutical Sciences, 2004Lyophilization of cosolvent systems may be a beneficial way of enhancing both physical and chemical stability of a drug product. The objective of this research is to establish whether cosolvent systems commonly used in the formulation of poorly water-soluble drugs can be successfully lyophilized. Polyethylene glycol (PEG) 400 was selected because it is
Rose-Marie Dannenfelser +3 more
openaire +3 more sources
Decomposition of Aspirin in Polyethylene Glycols
Journal of Pharmaceutical Sciences, 1972Decomposition of aspirin in polyethylene glycols was studied at four temperatures. The decomposition proceeded as a pseudo-first-order reaction at these temperatures. Different molecular weights of polyethylene glycol did not affect the reaction rate.
C.W. Whitworth, L.A. Luzzi, H.W. Jun
openaire +3 more sources