Is "irritable" in trivial terms the precursor to "irritated"?
Thanks.
Determine R,S configuration?
In this heat, the meadows are currently very dry – not least because I'm stuck: "Draw (2S, 3S)-2-amino-3-methyl-pentanoic acid I'm not as sure as Siegfried about the (2S, 3S) configuration. S means "counterclockwise." Let's look at (3S), the atoms in the third position, viewed from the right. What's attached to the carbon there? Above the…