Recommended Interesting Articles

Chemistry

3.3 - Cimetidine - histamine as a lead structure

Improvements in the first antagonists Despite the success of burimamide, this compound could not be used for clinical studies because the antagonistic effect was too low for oral availability. Attention has now been drawn to the imidazole ring of burimamide, i.e. the different tautomeric forms of this ring.
Read More
Chemistry

Point mutation

Subject - Genetics If a single base of a DNA is chemically changed or replaced by another base, one speaks of a point mutation. This type of mutation is relatively common because errors occasionally occur during transcription by the DNA polymerases or bases can be changed by e.g. UV radiation or the action of chemical pollutants on the DNA.
Read More
Chemistry

Material characterization II: NMR and other methods

Areas of application The areas of application of NMR spectroscopy in polymer analysis are: Chemical groups (composition), configuration, sequence analysis Up until now, NMR spectroscopy has mainly been used for the analysis of the monomer units in solution: stereochemical microstructures cannot be resolved so well with any other method (determination of tacticity).
Read More
Chemistry

Properties of polystyrene

Flame retardants: Halogen compounds Among the flame retardants for polystyrene, halogenated compounds are of greatest importance. They are available as additives that are mixed into the plastic melt, or as comonomers that are built into the polymers. At higher temperatures, these compounds release hydrogen halide or halogen.
Read More
Chemistry

Alkanes: cracking

Have you worked on the course unit Alkanes: Cracking and are you looking for further material? Then we recommend the following learning units: Structures of cycloalkanes15 min.ChemistryOrganic chemistryAlkanes This learning unit explains the ring tension of cycloalkanes using the examples of cyclopropane, cyclobutane and cyclohexane.
Read More