Ethyl Malonate Potassium Salt

Name: Ethyl Malonate Potassium Salt | Sarchem Labs
SKU: S1531

CAS: 6148-64-7

SKU: S1531

Ethyl malonate potassium salt | SKU: S1531

Synonyms: Monoethyl Potassium Malonate; Ethyl Potassium Malonate

Ethyl malonate potassium salt (CAS 6148-64-7) is the potassium salt of monoethyl malonate, supplied by Sarchem Labs as a white crystalline powder that combines the reactivity of a malonate anion with the shelf-stability of a dry solid. Every lot ships with a COA and SDS. Used as a masked monoethyl malonate equivalent for acylation and condensation chemistry building β-ketoesters.

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Specifications

Melting Point	200°C (existing Sarchem spec; sources indicate 194°C dec., flagged not resolved)
Color	White
IUPAC Name	Potassium 3-ethoxy-3-oxopropanoate
Formula Weight	170.21 (Sarchem, matches lit. 170.20)
Physical Form	Crystal-Powder at 20°C
Chemical Name or Material	Monoethyl Potassium Malonate
Molecular Formula	C5H7KO4
SMILES String	CCOC(=O)CC(=O)[O-].[K+]
Solubility	Soluble in water; slightly in methanol
CAS Number	6148-64-7
EC Number	228-156-7
NACRES	NA.22
UNSPSC Code	12352100
MDL Number	MFCD00035603
PubChem CID	3446434
Beilstein/REAXYS Number	3721682
InChIKey	WVUCPRGADMCTBN-UHFFFAOYSA-M

Applications

β-ketoester and alkylidene malonate synthesis

(Trimethylsilyl)ethyl malonate precursor for further elaboration

Reaction with aryl nitriles (Lewis-acid catalyzed) forming β-amino acrylates

Bench-stable alternative to free monoethyl malonate in scale-up chemistry

Succinate dehydrogenase inhibitor in biochemistry research

Product Description

What is Ethyl Malonate Potassium Salt?

Ethyl malonate potassium salt is the potassium carboxylate of monoethyl malonate — a white, water-soluble crystalline powder formed by neutralizing ethyl hydrogen malonate’s acidic proton with potassium. This ionic form gives it a well-defined solid melting behavior and easier long-term handling than the liquid free acid.

Uses of Ethyl Malonate Potassium Salt

Functions as a bench-stable surrogate for reactive malonate species, generating activated malonate equivalents in situ for β-ketoester synthesis or reaction with aryl nitriles to form β-amino acrylate intermediates. Also a research reagent as a succinate dehydrogenase inhibitor.