Electron spectroscopy of quaternary nitrogen compounds

1971 ◽  
Vol 43 (6) ◽  
pp. 729-736 ◽  
Author(s):  
John J. Jack ◽  
David M. Hercules
Keyword(s):  
Electron Spectroscopy ◽  
Nitrogen Compounds ◽  
Quaternary Nitrogen

Chromatography of quaternary nitrogen compounds on buffered cation-exchange resins

1963 ◽  
Vol 10 ◽  
pp. 432-438 ◽  
Author(s):  
D.D. Christianson ◽  
J.S. Wall ◽  
J.F. Cavins ◽  
R.J. Dimler
Keyword(s):  
Cation Exchange ◽  
Nitrogen Compounds ◽  
Quaternary Nitrogen ◽  
Cation Exchange Resins ◽  
Exchange Resins

Part II. Quaternary Nitrogen Compounds

1948 ◽  
Vol 18 (7) ◽  
pp. 403-415
Keyword(s):  
Nitrogen Compounds ◽  
Quaternary Nitrogen

Amino acids and quaternary nitrogen compounds in the germinating wheat grain

1978 ◽  
Vol 17 (8) ◽  
pp. 1209-1216 ◽  
Author(s):  
Catherine G. Chittenden ◽  
D.L. Laidman ◽  
N. Ahmad ◽  
R.G.Wyn Jones
Keyword(s):  
Amino Acids ◽  
Nitrogen Compounds ◽  
Wheat Grain ◽  
Quaternary Nitrogen

scholarly journals Demonstration of Increased Permeability as a Factor in the Effect of Acetylcholine on the Electrical Activity of Venom-Treated Axons

1963 ◽  
Vol 46 (5) ◽  
pp. 1065-1073 ◽  
Author(s):  
Philip Rosenberg ◽  
F. C. G. Hoskin
Keyword(s):  
Electrical Activity ◽  
Nitrogen Compound ◽  
Giant Axon ◽  
Squid Giant Axon ◽  
Bee Venom ◽  
Nitrogen Compounds ◽  
External Concentration ◽  
Quaternary Nitrogen ◽  
Rattlesnake Venom ◽  
Tertiary Nitrogen

D-Tubocurarine (curare) and acetylcholine (ACh) had been found to block electrical activity after treatment of squid giant axons with cottonmouth moccasin venom at a concentration which had no effect on conduction. It has now been demonstrated that this effect is attributable to reduction of permeability barriers. The penetration of externally applied C14-labeled dimethylcurare, ACh, choline, and trimethylamine into the axoplasm of the squid giant axon was determined in axons treated with either cottonmouth, rattlesnake, or bee venom, and in untreated control axons. The lipid-soluble tertiary nitrogen compound trimethylamine readily penetrated into the axoplasm of untreated axons. In contrast, after exposure of the axons to the lipid-insoluble quaternary nitrogen compounds for 1 hour their presence in the axoplasm was hardly detectable (less than 1 per cent). However, following 15µg/ml cottonmouth venom 1 to 5 per cent of their external concentration is found within the axoplasm while following 50µg/ml venom 10 to 50 per cent enters. The penetration of dimethylcurare is also increased by 10 µg/ml bee venom but not by 1 µg/ml bee venom nor 1000 µg/ml rattlesnake venom. The experiments show that when ACh and curare, following venom treatment, affect electrical activity, they also penetrate into the axon. Treatments which do not increase penetration are also ineffective in rendering the compounds active.

Reaction of diazomethane with quaternary nitrogen compounds to form betaines

1975 ◽  
pp. 1283 ◽  
Author(s):  
Siegfried E. Drewes ◽  
Herbert E. M. Magojo ◽  
Donald A. Sutton
Keyword(s):  
Nitrogen Compounds ◽  
Quaternary Nitrogen

scholarly journals Desorption of Quaternary Nitrogen Compounds from Cotton and Wool Fabrics

1955 ◽  
Vol 3 (4) ◽  
pp. 195-197
Author(s):  
Margaret T. Goldsmith ◽  
M. A. Latlief
Keyword(s):  
Nitrogen Compounds ◽  
Quaternary Nitrogen ◽  
Wool Fabrics

Electrical activity in electric tissue I. The difference between tertiary and quaternary nitrogen compounds in relation to their chemical and electrical activities

1955 ◽  
Vol 16 ◽  
pp. 268-282 ◽  
Author(s):  
Mario Altamirano ◽  
Walter L. Schleyer ◽  
Christopher W. Coates ◽  
David Nachmansohn
Keyword(s):  
Electrical Activity ◽  
Nitrogen Compounds ◽  
Quaternary Nitrogen ◽  
The Difference ◽  
Electrical Activities

Ionization of quaternary nitrogen compounds by secondary ion mass spectrometry

1979 ◽  
Vol 101 (2) ◽  
pp. 501-502 ◽  
Author(s):  
R. J. Day ◽  
S. E. Unger ◽  
R. G. Cooks
Keyword(s):  
Mass Spectrometry ◽  
Secondary Ion Mass Spectrometry ◽  
Nitrogen Compounds ◽  
Quaternary Nitrogen ◽  
Ion Mass Spectrometry ◽  
Secondary Ion
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