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Thiopental

硫喷妥

Also known as: 5-Ethyl-5-(1-methylbutyl)-2-thiobarbituric acid, Pentothal, Thiopentone, (±)-Thiopental, Thiomebumal, Intraval, Nesdonal, Penthiobarbital, Thiothal, Tiopentale, 5-ETHYL-5-[1-METHYLBUTYL]-2-THIOBARBITURIC ACID, 5-Ethyldihydro-5-(1-methylbutyl)-2-thioxo-4,6(1H,5H)-pyrimidinedione, EINECS 200-984-3, MFCD00057564

Thiopental (CAS 76-75-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H18N2O2S and a molecular weight of 242.33800 g/mol. It is also known as 5-Ethyl-5-(1-methylbutyl)-2-thiobarbituric acid, Pentothal and Thiopentone. Key properties include a melting point of 158-160°C, a density of 1.16g/cm3 and a flash point of 11 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
76-75-5
Jingsj CID
J-23961-1
Molecular Formula
C11H18N2O2S
Chinese Name
硫喷妥
Molecular Weight
242.33800 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point158-160°C
Density1.16g/cm3
Flash Point11 °C
Exact Mass242.10900
PSA90.29000
LogP2.00750
Refractive Index1.544
Storage Conditions2-8°C

GHS Safety & Compliance

Flammable / Acute Toxicity / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H301 — Toxic if swallowed
  • H311 — Toxic in contact with skin
  • H331 — Toxic if inhaled
  • H370 — Causes damage to organs

Frequently Asked Questions

What is the CAS number of Thiopental?

The CAS number of Thiopental is 76-75-5.

What are the molecular formula and molecular weight of Thiopental?

Thiopental has molecular formula C11H18N2O2S and molecular weight 242.33800 g/mol.

Is Thiopental hazardous?

Thiopental has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.

What are the upstream and downstream products of Thiopental?

For Thiopental, Upstream Products: 2-Bromopentane, Ethyl 2-cyano-2-ethyl-3-methylhexanoate, Ethyl 2-cyanobutanoate.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Thiopental (CAS 76-75-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23961-1 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.