Molekula
Monomethyl maleate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Monomethyl maleate is an organic chemical compound, specifically an unsaturated carboxylic acid ester, primarily used as an intermediate in pharmaceutical synthesis, polymer chemistry, and as a reagent in organic reactions. It is also employed in the production of coatings, adhesives, and certain agrochemicals due to its reactive double bond. This chemical has a CAS number of 3052-50-4, with the molecular formula C5H6O4 and a molecular weight of 130.10 g/mol. It should be stored between 2 to 8°C and carries a signal word of "Warning" for safety classification. Molekula supplies Monomethyl maleate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Colourles to light yellow to light orange clear liquid |
| Purity (GC) | ≥90.0% |
| Identification (NMR) | Conforms to structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 108 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 144.5 °C |
Source: PubChem CID 5354456 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 90034719 |
| CAS Number | 3052-50-4 |
| IUPAC Name | (Z)-4-methoxy-4-oxobut-2-enoic acid |
| EC Number | 221-271-3 |
| Molecular Formula | C5H6O4 |
| Molecular Weight | 130.10 |
| Exact Mass | 130.0266 |
| SMILES | COC(=O)/C=C\C(=O)O |
| InChIKey | NKHAVTQWNUWKEO-IHWYPQMZSA-N |
| InChI | InChI=1S/C5H6O4/c1-9-5(8)3-2-4(6)7/h2-3H,1H3,(H,6,7)/b3-2- |
| PubChem CID | 5354456 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2917194000 |
| Tariff Code | 2917198090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+350 IF ON SKIN: Gently wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, English (US), Estonian, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (Z)-4-methoxy-4-oxobut-2-enoic acid
- 2-Butenedioic acid (2Z)-, 1-methyl ester
- 2-Butenedioic acid (2Z)-, monomethyl ester
- 2-Butenedioic acid (Z)-, monomethyl ester
- 2-Butenedioic acid, monomethyl ester
- Hydrogen methyl maleate
- Maleic acid, monomethyl ester
- Methyl hydrogen maleate
- Monomethyl (Z)-2-butenedioate
- NKHAVTQWNUWKEO-IHWYPQMZSA-N
Frequently asked questions
What is monomethyl maleate commonly used for?
Monomethyl maleate is primarily used as an intermediate in organic synthesis, including the production of pharmaceuticals, agrochemicals, and polymers.
What is the chemical formula and molecular weight of monomethyl maleate?
The chemical formula is **C5H6O4**, and the molecular weight is **130.10 g/mol**.
How should monomethyl maleate be stored?
Store at **2 to 8°C** in a cool, dry place, away from incompatible substances.
What grade or purity is available for monomethyl maleate?
Molekula supplies monomethyl maleate in **analytical and synthesis-grade purity**—contact us for specific certifications.
Can Molekula supply monomethyl maleate in bulk quantities?
Yes, we offer bulk quantities of monomethyl maleate—minimum order quantities and pricing depend on the grade and application.
What documentation comes with an order of monomethyl maleate?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.