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Cyclobutane

   Also found in: Wikipedia 0.01 sec.
cyclobutane [¦sī·klō′byü‚tān]
(organic chemistry)
C4H8An alicyclic hydrocarbon, boiling point 11°C; synthesized as a condensable gas; used in organic synthesis. Also known as tetramethylene.

Cyclobutane 

(also tetramethylene), an alicyclic hydrocarbon; a colorless gas, with a weak odor, a boiling point of 12.9°C, and a density of 0.703 g/cm3 (at 0°C).

Cyclobutane is insoluble in water but is soluble in alcohol, acetone, and ether. It has all the chemical properties characteristic of cycloparaffins. It may be obtained from 1,4-dibromo butane and by other methods. Octafluorocyclobutane, C4F8, produced by the dimerization of tetrafluoroethylene is used in industry as a freon.



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lesions generated by UVC radiation are cyclobutane pyrimidine dimers and 6,4-photoproducts, which are repaired by means of the nucleotide excision-repair pathway (29).
We also showed that treatment of GTP to human skin prevents UVB-induced cyclobutane pyrimidine dimers formation, which are considered to be mediators of UVB-induced immune suppression and skin cancer induction.
Reduced global genomic repair of UV light-induced cyclobutane pyrimidine dimers in simian virus 40-transformed human cells.
 
 
 
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