Levosimendan

左西孟旦

Also known as: (R)-Simendan, Simdax, Simda, OR-1259, [[4-[(4R)-1,4,5,6-Terahydro-4-methyl-6-oxo-3-pyridazinyl]phenyl]hydrazono]propanedinitrile, Mesoxalonitrile (-)-{p-[(R)-1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl]phenyl}hydrazone, ({4-[(4R)-4-Methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl]phenyl}hydrazono)malononitrile

Levosimendan (CAS 141505-33-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C14H12N6O and a molecular weight of 280.285 g/mol. It is also known as (R)-Simendan, Simdax and Simda. Key properties include a melting point of 216-219ºC (dec.) and a density of 1.3±0.1 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
141505-33-1
Jingsj CID
J-17658-7
Molecular Formula
C14H12N6O
Chinese Name
左西孟旦
Molecular Weight
280.285 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point216-219ºC (dec.)
Density1.3±0.1 g/cm3

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Levosimendan?

The CAS number of Levosimendan is 141505-33-1.

What are the molecular formula and molecular weight of Levosimendan?

Levosimendan has molecular formula C14H12N6O and molecular weight 280.285 g/mol.

Is Levosimendan hazardous?

Levosimendan has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Levosimendan (CAS 141505-33-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17658-7 (accessed 2026-10-22).

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