- adj. of a chemical compound having a ring with six members
“The rigid linear molecules used contain aromatic six-membered rings as well as carbon–carbon triple bonds.”
“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.”
“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.”
“Penicillins are very similar, although they contain a five-membered ring in place of the six-membered ring present in the cephalosporin.”
“Pyridine is a six-membered ring with five carbon atoms and one nitrogen atom.”
“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.”
“Quinones are six-membered carbon rings with two oxygen atoms bound by double bonds to opposite ends of the molecule, and they occur in some microorganisms.”
“A six-membered team from Harvard and MIT recently won both Harvard Business School's and MIT's business plan competitions for their non-profit enterprise Diagnostics-For-All, which aims to improve global health care by using the paper technology as affordable yet accurate diagnostic devices.”
“(25-30\%), and lignin (15-30\%) ... all of which are five - and six-membered cyclic oxygenates.”
“Here it is easy to see the chemical structure, a four-membered ß-lactam ring attached to a six-membered sulphur-containing ring -- derived most probably like the corresponding penicillin, from "� - (a-aminoadipoyl) - cysteinyl valine but in an oxidized form.”
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