isomers

Substances which have precisely the same chemical formulæ (called isomers) have properties as widely apart as alcohol and ether.

The Breath of Life John Burroughs 1879

Both of the following have four carbon atoms and ten hydrogen atoms they are called isomers

Recently Uploaded Slideshows skyash 2009

These and similar substances, called "isomers," led chemists to suspect that substances are defined not simply by the number and kind of atoms in the molecule but also by the arrangement of those atoms.

Wöhler, Friedrich 2007

These and similar substances, called "isomers," led chemists to suspect that substances are defined not simply by the number and kind of atoms in the molecule but also by the arrangement of those atoms.

Von Liebig, Justus 2009

The results, Bada said, were even more remarkable than the earlier experiments—with a greater number of amino acids produced and a better lineup of isomers, compounds with the same molecular formula but with different structures.

First Contact Marc Kaufman 2011

Not only was he able to purify highly concentrated carotene, but in early 1931 he succeeded in separating two similar but distinct forms (isomers).

Richard Kuhn and the Chemical Institute: Double Bonds and Biological Mechanisms 2010

Sometimes, Mrs. Janner, it is important to remember that life is an isomerism in which the isomers change into one another with great ease so that they ordinarily exist together in equilibrium.

Trisomy Jeffrey S. Callico 2011

They then demonstrated that the different isomers of carotene have a qualitatively identical effect on the growth of the rats, their sexual cycle and a number of diseases.

Richard Kuhn and the Chemical Institute: Double Bonds and Biological Mechanisms 2010

Cardioprotection with palm oil tocotrienols: comparison of different isomers.

Craig Cooper: The Real Facts About Vitamin E and Prostate Cancer Craig Cooper 2011

The results, Bada said, were even more remarkable than the earlier experiments—with a greater number of amino acids produced and a better lineup of isomers, compounds with the same molecular formula but with different structures.

First Contact Marc Kaufman 2011