Examlex
If an activity produces a profit for at least two years during a consecutive five-year period,the burden of proof shifts to the IRS to show that the activity is not profit-motivated.
Quartet
In NMR spectroscopy, a signal that is split into four peaks, indicating an atom's hydrogen atoms are coupled to three equivalent neighboring hydrogens.
Doublet
A pattern in NMR spectroscopy indicating two adjacent protons that are not equivalent, leading to two closely spaced signals.
IR
Infrared spectroscopy, a technique used for identifying organic compounds through their unique absorption of infrared light.
NMR Data
Information obtained from nuclear magnetic resonance spectroscopy that provides details about the structure of molecules based on their magnetic properties.
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