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  2. Dimethylbenzylamine - Wikipedia

    en.wikipedia.org/wiki/Dimethylbenzylamine

    Dimethylbenzylamine is the organic compound with the formula C 6 H 5 CH 2 N(CH 3) 2. The molecule consists of a benzyl group, C 6 H 5 CH 2, attached to a dimethylamino functional group. It is a colorless liquid. It is used as a catalyst for the formation of polyurethane foams and epoxy resins.

  3. Nuclear magnetic resonance chemical shift re-referencing

    en.wikipedia.org/wiki/Nuclear_magnetic_resonance...

    Because of the magnitude and severity of the problems with chemical shift referencing in biomolecular NMR, a number of computer programs have been developed to help mitigate the problem (see Table 1 for a summary). The first program to comprehensively tackle chemical shift mis-referencing in biomolecular NMR was SHIFTCOR. [2] Table 1.

  4. Nuclear magnetic resonance spectra database - Wikipedia

    en.wikipedia.org/wiki/Nuclear_magnetic_resonance...

    Available through Wiley Online Library [3] (John Wiley & Sons), SpecInfo on the Internet NMR is a collection of approximately 440,000 NMR spectra (organized as 13 C, 1 H, 19 F, 31 P, and 29 Si NMR databases). The data are accessed via the Internet using a Java interface and are stored in a server developed jointly with BASF. The software ...

  5. 2,5-Dimethoxybenzaldehyde - Wikipedia

    en.wikipedia.org/wiki/2,5-Dimethoxybenzaldehyde

    2,5-Dimethoxybenzaldehyde is an organic compound and a benzaldehyde derivative. One of its uses is the production of 2,5-dimethoxyphenethylamine, also known as 2C-H . 2C-H is used to produce many other substituted phenethylamines such as 2C-B , 2C-I and 2C-C .

  6. Chemical shift - Wikipedia

    en.wikipedia.org/wiki/Chemical_shift

    Chemical shift δ is usually expressed in parts per million (ppm) by frequency, because it is calculated from [5] =, where ν sample is the absolute resonance frequency of the sample, and ν ref is the absolute resonance frequency of a standard reference compound, measured in the same applied magnetic field B 0.

  7. Triple-resonance nuclear magnetic resonance spectroscopy

    en.wikipedia.org/wiki/Triple-resonance_nuclear...

    The technique was first described in papers by Ad Bax, Mitsuhiko Ikura and Lewis Kay in 1990, [1] [2] and further experiments were then added to the suite of experiments. Many of these experiments have since become the standard set of experiments used for sequential assignment of NMR resonances in the determination of protein structure by NMR.

  8. Today's Wordle Hint, Answer for #1272 on Thursday, December ...

    www.aol.com/todays-wordle-hint-answer-1272...

    Today's Wordle Answer for #1272 on Thursday, December 12, 2024. Today's Wordle answer on Thursday, December 12, 2024, is VYING. How'd you do? Next: Catch up on other Wordle answers from this week.

  9. Nuclear magnetic resonance spectroscopy of carbohydrates

    en.wikipedia.org/wiki/Nuclear_magnetic_resonance...

    Typical 1 H NMR chemical shifts of carbohydrate ring protons are 3–6 ppm (4.5–5.5 ppm for anomeric protons). Typical 13 C NMR chemical shifts of carbohydrate ring carbons are 60–110 ppm In the case of simple mono- and oligosaccharide molecules, all proton signals are typically separated from one another (usually at 500 MHz or better NMR ...