Ethosuximide

Name: Ethosuximide
Brand: Vaqora Chemicals
SKU: VQ-025656

About Ethosuximide

Listed under CAS 77-67-8, Ethosuximide is a high-purity reference standard of Ethosuximide available from Vaqora Chemicals. The compound has the formula C7H11NO2, corresponding to a molecular weight of 141.17 g/mol. Its systematic (IUPAC) name is 3-ethyl-3-methylpyrrolidine-2,5-dione. Common synonyms include Zarontin and 2-Ethyl-2-methylsuccinimide.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

Laboratories use this Ethosuximide standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

We offer Ethosuximide in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Related to Ethosuximide

View every impurity, metabolite and intermediate we list for Ethosuximide.

Ethosuximide impurities

Specifications & identifiers

Chemical identifiers
Product name	Ethosuximide
Catalogue No.	VQ-025656
CAS Number	77-67-8
IUPAC name	3-ethyl-3-methylpyrrolidine-2,5-dione
Molecular formula	C₇H₁₁NO₂
Molecular weight	141.17 g/mol
Exact mass	141.079
Grade	Reference Standard
HSN code	38229090
InChIKey	HAPOVYFOVVWLRS-UHFFFAOYSA-N
SMILES	CCC1(CC(=O)NC1=O)C
PubChem CID	3291

Physical properties
Physical form	Solid
LogP (XLogP3)	0.4
H-bond donors / acceptors	1 / 2
TPSA	46.2 Å²
Synonyms	Zarontin, 2-Ethyl-2-methylsuccinimide, Ethosuxide, Emeside, Ethosuccimide, Ethosuccinimide, Atysmal, Suxinutin, Aethosuximide, Thilopemal, 3-Ethyl-3-methyl-2,5-pyrrolidinedione, 3-Methyl-3-ethylsuccinimide

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, 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

Frequently asked questions

What is the CAS number of Ethosuximide?

The CAS Registry Number of Ethosuximide is 77-67-8. It is also known as Zarontin, 2-Ethyl-2-methylsuccinimide, Ethosuxide.

What is the molecular formula and molecular weight of Ethosuximide?

Ethosuximide has the molecular formula C7H11NO2 and a molecular weight of 141.17 g/mol. Its IUPAC name is 3-ethyl-3-methylpyrrolidine-2,5-dione.

What is Ethosuximide used for?

Ethosuximide is supplied as a characterised reference material related to Ethosuximide. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Ethosuximide can I order?

We supply Ethosuximide in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Ethosuximide?

Yes. Every lot of Ethosuximide 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 Ethosuximide be shipped internationally?

Yes. Ethosuximide is classified as hazardous, 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.