from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun uncountable, organic chemistry A simple alicyclic hydrocarbon, C4H8; a light inflammable gas.
  • noun countable, organic chemistry Any derivative of this compound.


Sorry, no etymologies found.


  • A much studied model reaction in organic chemistry is the ring opening of cyclobutane to yield ethylene or the reverse, the combining of two ethylene molecules to form cyclobutane.

    Press Release: The 1999 Nobel Prize in Chemistry

  • How does the reaction from the cyclobutane molecule to two ethylene molecules actually proceed?

    Press Release: The 1999 Nobel Prize in Chemistry

  • You said "open chain structures" so I'm not considering ring structures like cyclobutane (C4H8).

    Yahoo! Answers: Latest Questions

  • CHS, contact hypersensitivity; CPD, cyclobutane pyrimidine dimer;

    Naturejobs - All Jobs

  • Multiple mechanisms have evolved to repair damaged DNA, including the versatile nucleotide excision repair (NER) which is capable of removing a variety of bulky helix-distorting lesions, such as UV-induced cyclobutane pyrimidine dimers (CPDs) and 6-4 photoproducts

    PLoS ONE Alerts: New Articles

  • Li S, Waters R (1996) Nucleotide level detection of cyclobutane pyrimidine dimers using oligonucleotides and magnetic beads to facilitate labelling of DNA fragments incised at the dimers and chemical sequencing reference ladders.

    PLoS ONE Alerts: New Articles

  • (A) DNA sequencing gels showing repair of UV-induced cyclobutane pyrimidine dimers (CPDs) in the transcribed strand of the

    PLoS ONE Alerts: New Articles

  • Because of the involvement of Polη in promoting error-free replication through cyclobutane pyrimidine dimers, its inactivation in humans causes the variant form of xeroderma pigmentosum, a genetic disorder characterized by a greatly enhanced predisposition to sun induced skin cancers

    PLoS ONE Alerts: New Articles

  • 27 This causes the hydrogen beyond this present threshold as the Iife form is moved into the lar density level will have to be - double bonds to break and create a where we have been kept by the next phase of the electromagnetic come less dense a n d grow more cyclobutane ring between t h e di - old solar paradigm of Power, spectrum.

    Recently Uploaded Slideshows


Log in or sign up to get involved in the conversation. It's quick and easy.