Methyl potassium malonate
Methyl potassium malonate (CAS: 38330-80-2), with the linear formula CH₃OCOCH₂COOK and a molecular weight of 156.18 g/mol, is a potassium salt of monomethyl malonate. This organic compound serves as a valuable building block in chemical synthesis, particularly in the preparation of various organic molecules. Its properties make it suitable for applications within research and development settings in the chemical and pharmaceutical industries.
- IUPAC
- Monomethyl malonate potassium salt,Potassium monomethyl malonate
- Synonyms
- Monomethyl malonate potassium saltPotassium monomethyl malonate

Organic Synthesis Intermediate
Methyl potassium malonate is employed as a key intermediate in the synthesis of complex organic molecules. Its malonate structure allows for versatile reactivity in various carbon-carbon bond-forming reactions.
Building Block for Fine Chemicals
This compound functions as a crucial building block for the production of fine chemicals. It is utilised in multi-step synthetic pathways where precise functional group manipulation is required.
Research and Development Reagent
In R&D laboratories, methyl potassium malonate is used as a reagent for exploring novel synthetic methodologies and developing new chemical entities. Its consistent quality supports reproducible experimental outcomes.
| Molecular weight | 156.18 |
|---|---|
| Linear formula | CH3OCOCH2COOK |
| Assay | ≥99.0% (NT) |

Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Methyl potassium malonate used for?
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Methyl potassium malonate is used as a building block in organic synthesis and as a reagent in chemical research and development laboratories for the preparation of fine chemicals and other organic molecules.
What is the CAS number and formula for Methyl potassium malonate?
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The CAS number for Methyl potassium malonate is 38330-80-2 and its linear formula is CH₃OCOCH₂COOK.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methyl potassium malonate with an assay of ≥99.0% (NT). This is typically considered a technical or research grade; TSS does not represent it as USP, BP, or EP grade.
What are the safety and handling precautions for Methyl potassium malonate?
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Methyl potassium malonate is classified as a warning substance. It can cause serious eye irritation (H319). Recommended personal protective equipment includes eyeshields, gloves, and a type N95 (US) or type P1 (EN143) respirator filter. Ensure good ventilation and avoid contact with eyes.
How is Methyl potassium malonate packed, shipped, and exported?
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Tech Serve Solutions professionally packs and ships chemicals globally, adhering to all relevant transport regulations for export.
How can I request a sample or quote for Methyl potassium malonate?
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To request a sample or a quote, please contact the Tech Serve Solutions sales team via the website or by phone, providing the product name and CAS number (38330-80-2).
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