Diethyl azodicarboxylate, conventionally abbreviated as DEAD and sometimes as DEADCAT, is an organic compound with the structural formula CH3CH2O2CN=NCO2CH2CH3.
DEAD is an orange-red liquid which weakens its color to yellow or colorless upon dilution or chemical reaction. This color change is conventionally used for visual monitoring of the synthesis. DEAD dissolves in most common organic solvents, such as toluene, chloroform, ethanol, tetrahydrofuran and dichloromethane but has low solubility in water or carbon tetrachloride; the solubility in water is higher for the related azo compound dimethyl azodicarboxylate.
Diabolic acids are actually a class of compounds where the m and n chains can have different lengths and can contain unsaturation. They were named after the Greek diabollo, meaning to mislead, since they were particularly difficult to isolate using standard gas chromatography techniques. One of the inventors, Prof Klein, also thought that they had ‘horns like the devil’.
Lucifer Yellow (C13H10Li2N4O9S2)
It is a fluorescent dye used in cell biology. The key property of Lucifer yellow is that it can readily visualized in both living and fixed cells using a fluorescence microscope. Lucifer yellow was engineered by Walter W. Stewart at NIH and patented in 1978.
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