for the following products
(R)-(-)-5-(Hydroxymethyl)-2-pyrrolidinone | (R)-(-)-5-Hydroxymethylpyrrolidin-2-one | 2-Pyrrolidinone,5-(hydroxymethyl)-, (5R)- | 5-Hydroxymethylpyrrolidin-2-one | D-Pyr-OL | D-Pyroglutaminol and (R)-(-)-5-(Hydroxymethyl)-2-pyrrolidone