Advertisement

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.

ENJOY UNLIMITED ACCES TO C&EN

Medicinal Chemistry

Chemistry In Pictures

Chemistry in Pictures: Cappuccino foam

by Alexandra A. Taylor
November 30, 2020

A photo of a white foam inside a rotary flask.
Credit: Mohamed Seleem

This soapy froth formed under reduced pressure in a rotovap after a solvent mixture containing ethyl acetate had evaporated from purified fractions. Mohamed Seleem, a PhD candidate at the University of Nebraska Medical Center, was synthesizing a sulfonamide derivative of tert-butyl–protected glutamic acid. When he released the pressure, the froth disappeared. “The most exciting thing is that proteins and long peptides behave the same under pressure or heat,” Seleem says, “but not single amino acids” like glutamic acid. Seleem is a medicinal chemist working to develop peptides and small molecules that act as bacterial membrane disruptors or otherwise affect bacterial growth.

Submitted by Mohamed Seleem (@MSeleem85)

Do science. Take pictures. Win money. Enter our photo contest here.

Click here to see more Chemistry in Pictures.

Article:

This article has been sent to the following recipient:

0 /1 FREE ARTICLES LEFT THIS MONTH Remaining
Chemistry matters. Join us to get the news you need.