CAS Registry Number

CAS 133-08-4 — Diethyl butylmalonate

Diethyl butylmalonate is an organic ester widely used as a key intermediate in pharmaceutical synthesis, agrochemical production, and the manufacture of fine chemicals. It serves as a building block for complex molecules due to its malonate functionality, enabling Knoevenagel condensations and other transformations. This chemical has a CAS number of 133-08-4, with the molecular formula CH3(CH2)3CH(CO2C2H5)2 and a molecular weight of 216.27. It is stored at ambient conditions and carries a signal word of "Warning" for safety classification. Molekula supplies Diethyl butylmalonate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.