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Pharmacopeial Impurities (EP / USP / BP)

Thiopental EP Impurity A

Reference StandardAvailable on request

Buy Thiopental EP Impurity A (CAS 29639-67-6) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Packs from 10 mg.

Pack sizes
Thiopental EP Impurity A chemical structure
CAS number29639-67-6
FormulaC9H14N2O2S
Molar mass214.29 g/mol
Physical formSolid
HS code38229090
InChIKeyLPLXQFNRPIWUOF-UHFFFAOYSA-N
IUPAC name5-pentan-2-yl-2-sulfanylidene-1,3-diazinane-4,6-dione

About Thiopental EP Impurity A

Thiopental EP Impurity A belongs to the Thiopental reference-standard family in the Zemixal catalogue. For your records (Reference Standard), the material is defined by CAS 29639-67-6, formula C9H14N2O2S and molar mass 214.29 g/mol. It is handled as a solid.

Use cases we see most often

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

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Every shipment includes a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Thiopental

See every impurity, metabolite and related compound we list for this API.

Thiopental standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Thiopental EP Impurity A
Product nameThiopental EP Impurity A
Catalogue numberZX-027231
CAS number29639-67-6
IUPAC name5-pentan-2-yl-2-sulfanylidene-1,3-diazinane-4,6-dione
Molecular formulaC9H14N2O2S
Molar mass214.29 g/mol
Exact mass214.0776
GradeReference Standard
Physical formSolid
XLogP31.7
H-bond donors / acceptors2 / 3
Topological polar surface area90.3 Ų
HS code38229090
InChIKeyLPLXQFNRPIWUOF-UHFFFAOYSA-N
SMILESCCCC(C)C1C(=O)NC(=S)NC1=O
PubChem CID73845636
SynonymsThiopental 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

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.

Pack sizes

Pack sizes of Thiopental EP Impurity A
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Thiopental EP Impurity A

Which CAS number identifies Thiopental EP Impurity A?
Thiopental EP Impurity A is registered under CAS 29639-67-6. You may also see it listed as Thiopental sodium - Impurity A, 5-(1-Methylbutyl)-2-thiobarbituric acid, 5-(1-Methyl-butyl)-2-thioxo-dihydro-pyrimidine-4,6-dione. Our catalogue number for this item is ZX-027231.
What are the formula and molar mass of Thiopental EP Impurity A?
For Thiopental EP Impurity A, its formula is C9H14N2O2S and its molar mass is 214.29 g/mol. The systematic (IUPAC) name is 5-pentan-2-yl-2-sulfanylidene-1,3-diazinane-4,6-dione. InChIKey LPLXQFNRPIWUOF-UHFFFAOYSA-N lets you match it in any structure database.
How is Thiopental EP Impurity A used in pharmaceutical QC?
Thiopental EP Impurity A is a characterised reference material linked to Thiopental. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Thiopental EP Impurity A?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Thiopental EP Impurity A?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Thiopental EP Impurity A to my country?
Yes. Thiopental EP Impurity A ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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