where is the second person from?
Rennes, France
Pierre Jean Robiquet
Pierre Jean Robiquet (13 January 1780 – 29 April 1840) was a French chemist. He laid founding work in identifying amino acids, the fundamental building blocks of proteins. He did this through recognizing the first of them, asparagine, in 1806, in the industry's adoption of industrial dyes, with the identification of alizarin in 1826, and in the emergence of modern medications, through the identification of codeine in 1832, a opiate alkaloid substance of widespread use with analgesic and antidiarrheal properties.

Robiquet was born in Rennes.
explain how one specific type of isomers (e.g. l-amino acid) can be functional in living organism UNANSWERABLE what is this acid about? Amino acids are organic compounds that contain amine (–NH) and carboxyl (–COOH) functional groups, along with a side chain (R group) specific to each amino acid. when was this acid first discovered? In 1806 - asparagine, the first amino acid to be discovered. who discovered it? Louis-Nicolas Vauquelin and Pierre Jean Robiquet
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Pierre Jean Robiquet [SEP] Introduction
(For biography details refer to the French Wikipedia article) Notable scientific achievements were among other things his isolation and characterization of properties of asparagine (the first amino acid to be identified, from asparagus, achieved. In 1806, with Louis Nicolas Vauquelin), cantharidin (1810), the Sigma-1 receptor agonist noscapine (1817), caffeine (1821), alizarin (later on moved to mass industrial production by Carl Gräbe and Carl Theodore Liebermann in Germany, and by William Henry Perkin in Great Britain) and purpurin (1826), Orcin (1829), amygdalin (1830), as well as codeine (1832). Some of these discoveries were made in collaboration with other scientists.