different between sirenin vs sirening

English

siren +? -in

sirenin (uncountable)

(organic chemistry) A sexual attraction pheromone in some fungi of the genus Allomyces.
Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
One notable early example was reported by Corey and involved an intramolecular cyclopropanation that was used in the synthesis of sirenin and has since been achieved asymmetrically using a chiral copper catalyst.

sirening

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