This chiral reagent, also known as (R)-α,α-Diphenyl-N-methyl-2-pyrrolidinemethanol, presents as a white to slightly pale yellow solid crystalline powder. It is known to be insoluble in water. Keep container tightly closed and store in a cool and dark place at 0-6°C. Store under inert gas and away from incompatible materials such as oxidizing agents. For maximum safety precautions, store locked up. This substance is air-sensitive. (R)-(-)-2-[Hydroxy(diphenyl)methyl]-1-methylpyrrolidine causes skin irritation, serious eye irritation, and may also cause respiratory irritation.