n-Ethylmaleimide, ≥99% (HPLC)

Name: n-Ethylmaleimide, ≥99% (HPLC)
Brand: Vaqora Chemicals
SKU: VQ-012618

About n-Ethylmaleimide, ≥99% (HPLC)

n-Ethylmaleimide (CAS 128-53-0) is a five-membered N-heterocycle offered by Vaqora Chemicals at a purity of ≥99.0%. The compound has the formula C6H7NO2, corresponding to a molecular weight of 125.13 g/mol. Systematically, it is named 1-ethylpyrrole-2,5-dione. Common synonyms include NEM and ethylmaleimide.

It is supplied as a white to light yellow crystals or lumps or powder. Reported physical data include a melting point of 43-46 °C and a boiling point of 210 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include protein and peptide research and organic synthesis. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer n-Ethylmaleimide in 1 g, 5 g, 25 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Protein & peptide research
Organic synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	n-Ethylmaleimide, ≥99% (HPLC)
Catalogue No.	VQ-012618
CAS Number	128-53-0
IUPAC name	1-ethylpyrrole-2,5-dione
Molecular formula	C₆H₇NO₂
Molecular weight	125.13 g/mol
Exact mass	125.0477
Purity / assay	≥99.0%
HSN code	29251900
InChIKey	HDFGOPSGAURCEO-UHFFFAOYSA-N
SMILES	CCN1C(=O)C=CC1=O
PubChem CID	4362

Physical properties
Physical form	Crystalline
Appearance	White to light yellow crystals or lumps or powder
Melting point	43-46 °C
Boiling point	210 °C
LogP (XLogP3)	0.9
H-bond donors / acceptors	0 / 2
TPSA	37.4 Å²
UN number	UN 2928
Synonyms	NEM, ethylmaleimide, 1H-pyrrole-2,5-dione, 1-ethyl-, maleimide, N-ethyl-, maleic acid N-ethylimide, N Ethylmaleimide, 1-Ethyl-1H-pyrrole-2,5-dione, USAF B-121, N-ethyl maleimide, n-ethylmaleimide (nem), Maleic Acid-N-Ethylimide, N-Ethylmaleimide, purum p.a., >=99.0% (HPLC)

Safety & hazard information (GHS)

Corrosive

Toxic

Harmful / irritant

Signal word: Danger

Hazard statements

H300Fatal if swallowed
H301Toxic if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction

Precautionary statements: P260, P261, P262, P264, P270, P272, P280, P301 + P316, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P321, P330, P333 + P317, P361 + P364, P362 + P364, P363, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 128-53-0

Synthesis

n-Ethylmaleimide, 98%

CAS: 128-53-0
Formula: C₆H₇NO₂
MW: 125.13 g/mol

VQ-012617

Frequently asked questions

What is the CAS number of n-Ethylmaleimide, ≥99% (HPLC)?

The CAS Registry Number of n-Ethylmaleimide, ≥99% (HPLC) is 128-53-0. It is also known as NEM, ethylmaleimide, 1H-pyrrole-2,5-dione, 1-ethyl-.

What is the molecular formula and molecular weight of n-Ethylmaleimide, ≥99% (HPLC)?

n-Ethylmaleimide, ≥99% (HPLC) has the molecular formula C6H7NO2 and a molecular weight of 125.13 g/mol. Its IUPAC name is 1-ethylpyrrole-2,5-dione.

Which grade and pack sizes of n-Ethylmaleimide, ≥99% (HPLC) can I order?

We supply n-Ethylmaleimide, ≥99% (HPLC) in (≥99.0%) grade, in 1 g, 5 g, 25 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with n-Ethylmaleimide, ≥99% (HPLC)?

Yes. Every lot of n-Ethylmaleimide, ≥99% (HPLC) is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can n-Ethylmaleimide, ≥99% (HPLC) be shipped internationally?

Yes. n-Ethylmaleimide, ≥99% (HPLC) is classified as hazardous (UN 2928), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.