Normethsuximide-D5

Name: Normethsuximide-D5
Brand: Vaqora Chemicals
SKU: VQ-049083

About Normethsuximide-D5

Normethsuximide-D5 (CAS 1185130-51-1) is a stable isotope labelled analogue related to Methsuximide offered by Vaqora Chemicals. The compound has the formula C11H11NO2, corresponding to a molecular weight of 194.24 g/mol. Its systematic (IUPAC) name is 3-methyl-3-(2,3,4,5,6-pentadeuteriophenyl)pyrrolidine-2,5-dione. Common synonyms include Normesuximide-d5 and N-Desmethylmesuximid d5.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Its mass shift relative to the unlabelled analyte makes it a dependable internal standard for LC-MS/MS assays, improving accuracy in bioanalysis, therapeutic drug monitoring and method validation. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Normethsuximide-D5 is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Related to Methsuximide

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

Methsuximide impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Normethsuximide-D5
Catalogue No.	VQ-049083
CAS Number	1185130-51-1
IUPAC name	3-methyl-3-(2,3,4,5,6-pentadeuteriophenyl)pyrrolidine-2,5-dione
Molecular formula	C₁₁H₁₁NO₂
Molecular weight	194.24 g/mol
Exact mass	194.1104
Grade	Reference Standard
HSN code	38229090
InChIKey	UDESUGJZUFALAM-VIQYUKPQSA-N
SMILES	[2H]C1=C(C(=C(C(=C1[2H])[2H])C2(CC(=O)NC2=O)C)[2H])[2H]
PubChem CID	46782593

Physical properties
Physical form	Solid
LogP (XLogP3)	1
H-bond donors / acceptors	1 / 2
TPSA	46.2 Å²

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 Normethsuximide-D5?

The CAS Registry Number of Normethsuximide-D5 is 1185130-51-1. It is also known as Normesuximide-d5, N-Desmethylmesuximid d5, 3-Methyl-3-(~2~H_5_)phenylpyrrolidine-2,5-dione.

What is the molecular formula and molecular weight of Normethsuximide-D5?

Normethsuximide-D5 has the molecular formula C11H11NO2 and a molecular weight of 194.24 g/mol. Its IUPAC name is 3-methyl-3-(2,3,4,5,6-pentadeuteriophenyl)pyrrolidine-2,5-dione.

What is Normethsuximide-D5 used for?

Normethsuximide-D5 is supplied as a characterised reference material related to Methsuximide. 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 Normethsuximide-D5 can I order?

We supply Normethsuximide-D5 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 Normethsuximide-D5?

Yes. Every lot of Normethsuximide-D5 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 Normethsuximide-D5 be shipped internationally?

Yes. We export Normethsuximide-D5 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.