Sentence examples for many compounds do from inspiring English sources

Many compounds do not exist in molecular form, either as pure substances or in their solutions.

This challenge arises because many compounds do not produce crystals of suitable morphology for single crystal X-ray analysis [12, 20, 60, 61, 62], that is, the crystals are usually twined or exist as thin needles that are very fragile and do not diffract well.

There are also potential pitfalls of using C. elegans for drug screening, as many compounds do not easily penetrate the worm's protective cuticle [11] and as biotransformation of compounds by the worms' E. coli food source may give misleading pharmacological information [12].

Contaminant levels in caged mussels increased rapidly to stable levels for trace metals, whereas for hydrophobic organic contaminants the increase was steady but slow and for many compounds did not reach the levels observed in native mussels.

Additionally, although many compounds did prolong APD and QT, a relatively large number of compounds shortened APD and QT, and several of these could precipitate ventricular tachycardia (VT) and VF.

Many bioactive compounds do not make it to clinical trials because of adverse pharmacokinetic properties.

Many organic compounds do not fulfil these criteria by virtue of their possessing polar functional groups.

Subsequent analysis of the scientific literature revealed that many of our compounds do indeed inhibit polymerization of tubulin in vitro.

But for so many compounds I do not think the studies have been done to say what precisely the threats are -- it's a mixture.

The other way around, if the first step is not efficient, the second step will have to inspect too many compounds that don't contain the substructure at all.

For example, many metallic and organic compounds do not satisfy this principle and therefore cannot be described by the model.