chiral pool
This term is a specialized technical expression used almost exclusively in organic chemistry and pharmacology. It describes a strategic approach to synthesis where a chemist "borrows" the pre-existing chirality of nature—such as the specific handedness of a sugar or amino acid—rather than attempting to create a chiral center from an achiral precursor using expensive catalysts.
Because it refers to a conceptual collection of available building blocks, it is treated as an uncountable mass noun in professional discourse. One does not typically refer to "multiple chiral pools" unless discussing different categories of natural precursors (e.g., the carbohydrate pool versus the amino acid pool), but in standard laboratory contexts, it functions as a singular, collective entity.
Meanings
A collection of readily available, inexpensive, and enantiopure organic molecules derived from natural sources, such as amino acids, sugars, and terpenes, used as starting materials for the asymmetric synthesis of complex chiral molecules.
The chemist utilized the chiral pool by starting the synthesis with L-proline to ensure the correct stereochemistry of the final drug candidate.