Thiopental EP Impurity A

Name: Thiopental EP Impurity A
Brand: Vaqora Chemicals
SKU: VQ-028338

About Thiopental EP Impurity A

Thiopental EP Impurity A (CAS 29639-67-6) is a pharmacopeial impurity of Thiopental offered by Vaqora Chemicals. With the molecular formula C9H14N2O2S, it has a molar mass of 214.29 g/mol. Its systematic (IUPAC) name is 5-pentan-2-yl-2-sulfanylidene-1,3-diazinane-4,6-dione. It is also known as Thiopental sodium - Impurity A or 5-(1-Methylbutyl)-2-thiobarbituric acid.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Good laboratory practice and suitable PPE are recommended during handling.

Pharmaceutical QC and development laboratories use this impurity standard of Thiopental to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Thiopental EP Impurity A is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Thiopental

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

Thiopental impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Thiopental EP Impurity A
Catalogue No.	VQ-028338
CAS Number	29639-67-6
IUPAC name	5-pentan-2-yl-2-sulfanylidene-1,3-diazinane-4,6-dione
Molecular formula	C₉H₁₄N₂O₂S
Molecular weight	214.29 g/mol
Exact mass	214.0776
Grade	Reference Standard
HSN code	38229090
InChIKey	LPLXQFNRPIWUOF-UHFFFAOYSA-N
SMILES	CCCC(C)C1C(=O)NC(=S)NC1=O
PubChem CID	73845636

Physical properties
Physical form	Solid
LogP (XLogP3)	1.7
H-bond donors / acceptors	2 / 3
TPSA	90.3 Å²
Synonyms	Thiopental sodium - Impurity A, 5-(1-Methylbutyl)-2-thiobarbituric acid, 5-(1-Methyl-butyl)-2-thioxo-dihydro-pyrimidine-4,6-dione, 4,6(1H,5H)-Pyrimidinedione, dihydro-5-(1-methylbutyl)-2-thioxo-, Dihydro-5-(1-methylbutyl)-2-thioxo-4,6(1H,5H)-pyrimidinedione, 5-((1RS)-1-Methylbutyl)-2-thioxo-2,3-dihydropyrimidine-4,6(1H,5H)-dione, 5-[(1RS)-1-Methylbutyl]-2-thioxo-2,3-dihydropyrimidine-4,6(1H,5H)-dione, Desethylthiopental, 1-methyl butyl thio-barbituric acid, 5-[(1RS)-1-methylbutyl]-2-thioxo-2,3-dihydropyrimidine- 4,6(1H,5H)-dione

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 Thiopental EP Impurity A?

The CAS Registry Number of Thiopental EP Impurity A is 29639-67-6. It is also known as Thiopental sodium - Impurity A, 5-(1-Methylbutyl)-2-thiobarbituric acid, 5-(1-Methyl-butyl)-2-thioxo-dihydro-pyrimidine-4,6-dione.

What is the molecular formula and molecular weight of Thiopental EP Impurity A?

Thiopental EP Impurity A has the molecular formula C9H14N2O2S and a molecular weight of 214.29 g/mol. Its IUPAC name is 5-pentan-2-yl-2-sulfanylidene-1,3-diazinane-4,6-dione.

What is Thiopental EP Impurity A used for?

Thiopental EP Impurity A is supplied as a characterised reference material related to Thiopental. 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 Thiopental EP Impurity A can I order?

We supply Thiopental EP Impurity A 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 Thiopental EP Impurity A?

Yes. Every lot of Thiopental EP Impurity A 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 Thiopental EP Impurity A be shipped internationally?

Yes. We export Thiopental EP Impurity A worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.