Pimobendan

Also known as: (±)-UD CG 115BS, 2-(4-methoxyphenyl)-5(6)-(5-methyl-3-oxo-4,5-dihydro-2H-6-pyridazinyl)benzimidazole, 4,5-Dihydro-6-[2-(4-methoxyphenyl)-1H-benzimidazol-5-yl]-5-methyl-3(2H)-pyridazinone, 6-[2-(4-Methoxyphenyl)-1H-benzimidazol-5-yl]-5-methyl-4,5-dihydropyridazin-3(2H)-one, UD-CG 115, Vetmedin, Acardi

Pimobendan (CAS 74150-27-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C19H18N4O2 and a molecular weight of 334.372 g/mol. Key properties include a melting point of 249 °C(dec.) and a density of 1.4±0.1 g/cm3. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 74150-27-9
Jingsj CID: J-33593-3
Molecular Formula: C₁₉H₁₈N₄O₂
Molecular Weight: 334.372 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	249 °C(dec.)
Density	1.4±0.1 g/cm3
Exact Mass	334.142975
PSA	79.37000
LogP	1.81
Refractive Index	1.693

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

H301 — Toxic if swallowed

Activity & Biological Data

Additional Information	[1]. Kajimoto K, et al. Contribution of phosphodiesterase isozymes to the regulation of the L-type calcium current in human cardiac myocytes. Br J Pharmacol. 1997 Aug;121(8):1549-56. [2]. Iwasaki A, et al. Pimobendan inhibits the production of proinflammatory cytokines and gene expression of inducible nitric oxide synthase in a murine model of viral myocarditis. J Am Coll Cardiol. 1999 Apr;33(5):1400-7.

Additional Information

[1]. Kajimoto K, et al. Contribution of phosphodiesterase isozymes to the regulation of the L-type calcium current in human cardiac myocytes. Br J Pharmacol. 1997 Aug;121(8):1549-56. [2]. Iwasaki A, et al. Pimobendan inhibits the production of proinflammatory cytokines and gene expression of inducible nitric oxide synthase in a murine model of viral myocarditis. J Am Coll Cardiol. 1999 Apr;33(5):1400-7.

Customs & Trade Information

HS Code	29310095

Frequently Asked Questions

What is the CAS number of Pimobendan?

The CAS number of Pimobendan is 74150-27-9.

What are the molecular formula and molecular weight of Pimobendan?

Pimobendan has molecular formula C19H18N4O2 and molecular weight 334.372 g/mol.

Is Pimobendan hazardous?

Pimobendan has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Pimobendan (CAS 74150-27-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33593-3 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.