Over the last few years, more and more analytical and industrial laboratories have started employing quantitative nuclear magnetic resonance (qNMR) spectroscopy as a tool for content assignment (due to its superb structural elucidation abilities) and quantification of purity in a sample. Read more.

Repellents are used worldwide to protect against insect bites. This blog describes fun facts about mosquitoes, which substances are considered safe to be used in repellents applied to the skin, and look inside a pure repellent sample via 1H NMR. Read more.

In the agrochemical industry, quantifying active ingredients containing fluorine can be simplified by using 19F benchtop NMR instead of other nuclides proton. Read more to find out how.

Fluorine-19 is one of the most popular nuclides in NMR, along with 1H, 13C and 31P. It has a relatively large chemical shift window (-300 to 400 ppm), which minimizes signal overlap even at low fields, is 100% naturally abundant, and its sensitivity is nearly as high as proton. Read more.

Proton and carbon NMR analyses are routinely used in organic laboratories. In proton, 1H-1H coupling pattern is well exploited, and 1H-13C couplings as referred to as the carbon satellites. However, when acquiring carbon data, proton decoupling is applied most of the time and consequently it is not common to evaluate 1H-13C couplings in routine carbon analysis. This blog discusses the 1H-13C coupling in tert-butanol through 1D and 2D data, highlighting the key info. Read more.

Parabens are widely used preservatives in food, cosmetics, & pharmaceuticals. Due to their presence in consumer products, methods to determine their purity are important. The current methods using HPLC are powerful, but wasteful and inefficient. In this blog post, we showcase the use of benchtop NMR to quantify the purity of 3 different parabens & demonstrate that this approach is quicker & far less expensive than the traditional methods currently used in industry. Read more.

Quantification of phosphorus-containing species through 31P benchtop NMR analysis. It was evaluated one of the most popular herbicides in the world, Roundup®, and a very common household insecticide, 50% Malathion Concentrate®. Read more.

NMR is a great tool for the analysis of molecular properties such as the amide bond, which has a restricted rotation around the C–N bond. In Biochemistry, the amide bond is referred to as the peptide bond. This bond is formed by the union of a carboxyl group of one amino acid with the amino group of another amino acid. Read more.

With Valentine’s Day quickly approaching, some of you may be planning for that special date you have planned. Maybe you’ll go for the glossy look, maybe the matte; should I go for a light tone, or something that pops? Well, before you even think about that, check those expiration date! With the nature of lipsticks being opened and closed, they are highly susceptible to oxidation, so read more to find out!

Have you ever questioned why hydroxyl groups/alcohol signals appear as singlet in the 1H NMR spectrum? Shouldn’t they also couple with neighboring hydrogen atoms and show the corresponding splitting pattern? Yes…no…why? Don’t worry! We’ll get to the bottom of it and discuss how exchange rates, concentrations, and the presence of water affect the NMR spectra of ethanol in CDCl3. Benchtop NMR solves so many questions – feel free to reach out to us to make sure yours can answered too.