4-03-00-01780 (Beilstein Handbook Reference) 4619-66-3 ACETOACETIC ACID, 2-ACETYL-, METHYL ESTER BRN 1706278 Butanoic acid, 2-acetyl-3-oxo-, methyl ester (9CI) EINECS 225-031-9 Methyl 2-acetyl-3-oxobutanoate Methyl 2-acetylacetoacetate Methyl diacetoacetate Methyl diacetylacetate Methylester kyseliny diacetoctove [Czech]