1-Hydroxymethylpyrrolidin-2-one, 1-(hydroxymethyl)-2-pyrrolidinone, 2-Pyrrolidinone,1-(hydroxymethyl), N-Methylolpyrrolidinone, N-Methylol-2-pyrrolidinone, N-Methylolpyrrolidone, N-Methylol-2-pyrrolidone, (5S)-hydroxymethylpyrrolidin-2-one, N-hydroxymethyl-2-pyrrolidinone, N-hydroxymethyl-2-pyrrolidone