Labelled Compounds

Photophysics of pyrene-labelled compounds of biophysical interest.

The effects of the chemical constitution and structure of the substituent on the excited state dynamics of several model fluorescent pyrene-labelled molecules of biophysical interest have been examined. Nine new 1-substituted pyrenyl compounds, Py-NH-CO-C2H5, Py-NH-CO-Leu-Boc, Py-CH2-NH-CO-C2H5, Py-CH2-NH-CO-Leu-Boc, Py-CO-NH-C3H7, Py-CO-NH-Leu-OMe, Py-CH2-CO-NH-C3H7, Py-CH2-CO-NH-Leu-OMe and P...

Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds

Measurement of loss rates of organic compounds in snow using in situ experiments and isotopically labelled compounds Erika von Schneidemesser, James J. Schauer, Martin M. Shafer & Michael H. Bergin 1 Environmental Chemistry and Technology Program, University of Wisconsin Madison, 660 North Park Street, Madison, WI 53706, USA 2 School of Civil and Environmental Engineering and School of Earth an...

Synthesis and electron spin resonance study of spin-labelled compounds related to tumour-growth inhibitory nitroarylaziridines.

Three stable free radicals have been prepared which are akin to 5-aziridino-2,4-dinitrobenzamide (CB 1954); these compounds all contain a nitroxide function. The metabolism and excretion of two such compounds in mice has been monitored by electron spin resonance (ESR) spectroscopy and compared with that of the simpler nitroxide, 4-keto-2,2,6,6-tetramethylpiperidino-1-oxyl (tempone).

Effect of Adamantyl Compounds on Dynamics of Spin Labelled Multilamellar Liposomes

Interactions of two adamantyl molecules: 3-(adamantan-1-yl)propan-1-aminium chloride (compound A) and 1-hydroxyadamantan (compound B) with multilayer liposomes composed of L-α-phosphatidylcholine, cholesterol and dicetylphosphate, spin labelled with n-doxylstearic acids (n = 5, 7, 10, 12, 16) were investigated. In the presence of aminium salt (A) or alcohol (B) the increased dynamics of 5-doxyl...

Studies on the degradation of thyroid hormones in vitro with compounds labelled in either ring.