six-membered

The rigid linear molecules used contain aromatic six-membered rings as well as carbon–carbon triple bonds.

Molecules Shaped Like Wagon Wheels | Impact Lab 2007

Oslo dealt with inorganic chemistry, but from 1930 onwards his work was concentrated on problems connected with molecular structure, particularly the structure of cyclohexane and its derivatives and other substances containing six-membered rings related to that of cyclohexane.

Odd Hassel - Biography 1972

Professor Hassel's elegant work on six-membered rings, carried out with ever increasing precision, has laid a solid foundation for a dynamic chemistry in three dimensions.

Nobel Prize in Chemistry 1969 - Presentation Speech 1970

Pyridine is a six-membered ring with five carbon atoms and one nitrogen atom.

innovations-report 2009

Pyridine is a six-membered ring with five carbon atoms and one nitrogen atom.

innovations-report 2009

Penicillins are very similar, although they contain a five-membered ring in place of the six-membered ring present in the cephalosporin.

Citizendium, the Citizens' Compendium - Recent changes [en] 2009

Penicillins are very similar, although they contain a five-membered ring in place of the six-membered ring present in the cephalosporin.

Citizendium, the Citizens' Compendium - Recent changes [en] 2009

Adenine and guanine are fused five - and six-membered purines, while cytosine and thymine are six-membered rings called uracil (U), replaces thymine in RNA.

Citizendium, the Citizens' Compendium - Recent changes [en] 2009

Penicillins are very similar, although they contain a five-membered ring in place of the six-membered ring present in the cephalosporin.

Citizendium, the Citizens' Compendium - Recent changes [en] 2009

Pyridine is a six-membered ring with five carbon atoms and one nitrogen atom.

PhysOrg.com - latest science and technology news stories 2009