2-Butanone, 4-hydroxy- 3-HYDROXY-2-BUTANONE 3-Ketobutan-1-ol 3-Oxo-1-butanol 3-Oxobutanol 4-Butanol-2-one 4-Hydroxy-2-butanone 4-Hydroxybutan-2-one 590-90-9 AI3-11747 EINECS 209-693-6 Methylolacetone Monomethylolacetone NSC 41219