Cyclobutane (287-23-0)

 Cyclobutane ,its cas register number is 287-23-0. It also can be called Tetramethylene . Itself is of no commercial or biological significance, but more complex derivatives are important in biology and biotechnology. As such, Cyclobutane (CAS NO.287-23-0) is unstable above about 500 °C. Its four carbon atoms in cyclobutane are not coplanar, instead the ring typically adopts a folded or "puckered" conformation. Despite inherent strain the cyclobutane motif is not an alien to molecules found in nature, and its photodimers ("CPD's") are formed by photochemical reactions that result in the coupling of the C=C double bonds of pyrimidines. It may be incompatible with strong oxidizing agents like nitric acid. In other settings, mostly unreactive. Not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents.