cas no: 105-45-3 Methyl 3-ketobutyrate; Methyl acetylacetate; Methyl 3-oxobutanoate; Methyl 3-oxobutyrate; Acetoacetic acid methyl ester; Methyl acetonecarboxylate; Methylacetoacetat (German); acetoacetato de metilo (Spanish); acétoacétate de méthyle (French);