butyl butyryllactate(1-butoxy-1-oxopropan-2-yl) butanoate1-butoxy-1-oxopropan-2-yl butyrate2-butoxy-1-methyl-2-oxoethyl butanoateFEMA 2190O-butyryllactic acid butyl esterbutanoic acid 2-butoxy-1-methyl-2-oxoethyl esterbutyl 2-(butyryloxy)propionatebutyl O-butyryllactatebutyl butyrolactatebutyl butyryl lactatebutyric acid ester with butyl lactatelactic acid, butyl ester, butyraten-butyl n-butyryl lactate