2-Propanone, (1-methylethylidene)hydrazone 4-01-00-03207 (Beilstein Handbook Reference) 627-70-3 AI3-27679 Acetazine Acetone azine Acetone ketazine Acetone, azine BRN 0956583 Dimethyl ketazine EINECS 211-009-6 Ketazine NSC 170328 NSC 52680