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Posts tagged with "Analytical Chemistry"

  • Analytical Chemistry

    Down to the Atoms

    I wanted to mention something that was reported a week or so ago, and may sound a bit exotic or obscure, if you’re not a structural biologist. But it’s yet another sign of a revolution in our ability to get structures of biomolecules (and others) that we never would have before, and the effects over… Read More
  • Analytical Chemistry

    Phosphine, Life, and Venus

    Well, as a chemist – one who does amateur astronomy on the side, yet – it’s obligatory that I write about the phosphine on Venus paper that came out yesterday. This one’s embargo was spectacularly leaky, so everyone who’s really into this stuff had various kinds of advance warning, but the news certainly has made… Read More
  • Analytical Chemistry

    Ammonia, Electrons, and Metals

    Let’s do some pure chemistry today, because an interesting paper has come out about a reaction that every student learns about in their sophomore organic chemistry course: the Birch reduction. It’s a powerful technique that will do some things that very few other reactions will do for you (such as break up the aromaticity of… Read More
  • Analytical Chemistry

    More on Screening For Coronavirus Therapies

    Time for a word about screening for new coronavirus drugs. Things have gone on long enough for quite a few groups to produce supplies of the various viral proteins and set up small-molecule screens against them. That’s no bad thing in itself, although it is a slow thing, a very slow thing by the standards… Read More
  • Analytical Chemistry

    Antibody Tests for the Coronavirus

    Let’s talk antibodies. Mounting an antibody response is crucial for anyone to overcome a challenge from an infectious pathogen, and the immunity that can result is crucial for entire communities and populations. Determining who has such immunity is furthermore going to be crucial for us as we come out from under the current pandemic. If… Read More
  • Alzheimer's Disease

    Congo Red

    Many roots of organic chemistry, and of medicinal chemistry in particular, often originate in what might seem like an unlikely place: the dyestuff industry of the late 19th century. I had already known this to some degree, but writing the historical vignettes in The Chemistry Book really brought it home to me. And if you… Read More
  • Analytical Chemistry

    March of the Raman Images

    Well, since I mentioned just the other day (and not for the first time) that determining drug concentrations and localization in cells is a major unsolved problem, I should probably talk about this new paper (a collaboration between groups in Edinburgh and Glasgow, nice to see since their cities are not always collaborative in all… Read More
  • Analytical Chemistry

    Sticking Together in Solution

    I will cause no controversy by saying that most of the small-molecule compounds that we develop as potential drugs in this business are rather poorly soluble in water. Every organization I’ve worked in has made the standard jokes about “brick dust” and “powdered Teflon”, and for the well-founded standard reasons. A lot… Read More
  • Analytical Chemistry

    Which Enantiomer, Anyway?

    Assigning enantiomers (mirror-image isomers of a compound, for the non-organic-chemists in the crowd) can be a pain. By definition, no non-chiral technique can tell the difference between such things, and many of the chiral techniques will just tell you that they’re different, but not which one is which. Take, for example, chiral chromatograp… Read More
  • Analytical Chemistry

    Only Connect

    Anyone who’s done fragment-based drug design (especially) or who has just looked at a lot of X-ray crystal structures of bound ligands will be able to back up this statement: if you sit down with a series of such structures, all bound to the same site, it is very, very difficult to rank-order them in… Read More