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Cardiovascular and metabolic drugs

Pimobendan

Also known as pimobendane, Acardi, dl-Pimobendan

CAS 74150-27-9Formula C19H18N4O2Molar mass 334.38 g/molEC 640-420-7
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant, Serious health hazard 96 suppliers listed Drug substance
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Pimobendan chemical structure, C19H18N4O2, CAS 74150-27-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
74150-27-9
Formula
C19H18N4O2
Molar mass
334.38 g/mol
EC number
640-420-7
HS code
293379
Category
Cardiovascular and metabolic drugs

What is Pimobendan?

Plain description, key identifiers and synonyms

Pimobendan is a member of benzimidazoles and a pyridazinone. It has a role as a vasodilator agent, a cardiotonic drug and an EC 3.1.4.* (phosphoric diester hydrolase) inhibitor.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-[2-(4-methoxyphenyl)-3H-benzimidazol-5-yl]-4-methyl-4,5-dihydro-1H-pyridazin-6-one
CAS number
74150-27-9 CAS number cross-checkedOther or deprecated CAS: 118428-36-7, 118428-37-8, 118428-38-9
EC number
640-420-7
Molecular formula
C19H18N4O2
UNII
34AP3BBP9T, 613JXV89SU, 9HTU209Z0N
MDL number
MFCD00761648
InChIKey
GLBJJMFZWDBELO-UHFFFAOYSA-N
InChI
InChI=1S/C19H18N4O2/c1-11-9-17(24)22-23-18(11)13-5-8-15-16(10-13)21-19(20-15)12-3-6-14(25-2)7-4-12/h3-8,10-11H,9H2,1-2H3,(H,20,21)(H,22,24)
SMILES (canonical and isomeric)
CC1CC(=O)NN=C1C2=CC3=C(C=C2)N=C(N3)C4=CC=C(C=C4)OC

Synonyms

  • pimobendane
  • Acardi
  • dl-Pimobendan
  • Vetmedin
  • Pimobendanum
  • Racemic pimobendan
  • UDCG-115
  • Fortekor plus component pimobendan
  • 3(2H)-Pyridazinone, 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-
  • 6-[2-(4-methoxyphenyl)-1H-benzimidazol-5-yl]-5-methyl-4,5-dihydropyridazin-3(2H)-one
  • Pimobendan,USP
  • Vetmedin Solution
  • Pimobendan EP5
  • 6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-4,5-dihydropyridazin-3(2H)-one
  • Vetmedin-CA1
  • SolutitionKits Pimobendan
  • 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazole-5-yl)-5-methyl-3(2H)-pyridazinone
  • d-Pimobendan
  • Pimobendan, (-)-
  • (-)-Pimobendan
  • l-Pimobendan
  • (+)-Pimobendan
  • 6-(2-(4-Methoxyphenyl)-1H-benzo[d]imidazol-5-yl)-5-methyl-4,5-dihydropyridazin-3(2H)-one
  • Pimobendan, (+)-
  • 3-[2-(4-methoxyphenyl)-3H-benzimidazol-5-yl]-4-methyl-4,5-dihydro-1H-pyridazin-6-one
Show all 35 synonyms
  • rac Pimobendan
  • 3(2H)-Pyridazinone, 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-, (+)-
  • 3(2H)-Pyridazinone, 4,5-dihydro-6-(2-(4-methoxyphenyl)-1H-benzimidazol-5-yl)-5-methyl-, (-)-
  • Racemic pinobendan
  • UD-CG 115
  • UD-CG 115 BS
  • Pimobendan (Vetmedin)
  • (+)-UD-CG 115BS
  • (-)-UD-CG 115BS
  • Pimobendam

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
334.38 g/molcalc.
Exact mass
334.143 Dacalc.
LogP (octanol/water)
3.1calc.
Topological polar surface area
79.37 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
3calc.
Heavy atoms
25calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.21calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CCC(c2ccc3nc(-c4ccccc4)[nH]c3c2)=NN1

O=C1CCC(c2ccc3nc(-c4ccccc4)[nH]c3c2)=NN1

4 rings, 22 atoms.

3 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H301Toxic if swallowed.
  • H302Harmful if swallowed.
  • H332Harmful if inhaled.
  • H361Suspected of damaging fertility or the unborn child.
  • H412Harmful to aquatic life with long lasting effects.
  • H413May cause long lasting harmful effects to aquatic life.
Precautionary statements (16)
  • P203Obtain, read and follow all safety instructions before use.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Pimobendan suppliers

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All 96 suppliers
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Where suppliers are based

96 suppliers in 14 countries

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Pimobendan price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Use classes: Animal Drugs.

Pharmacological actions

  • Cardiotonic Agents
  • Phosphodiesterase Inhibitors
  • Vasodilator Agents

Roles

  • cardiotonic drug
  • cardiovascular drug
  • enzyme inhibitor
  • pharmaceutical
  • vasodilator agent

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Pimobendan is traded under.

HS 2933.79Indicative HS code

Lactams, other lactams

World exports in 2024
$16.2B
−64.4% vs 2023, imports $15.4B
2019 to 2024
Top exporters
  1. Ireland37.0%
  2. France * partner reported15.6%
  3. Spain11.3%
Top importers
  1. Germany27.8%
  2. Ireland18.9%
  3. Panama * partner reported12.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Pimobendan is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pimobendan, based on the data on this page

What is Pimobendan?

Pimobendan is a member of benzimidazoles and a pyridazinone. It has a role as a vasodilator agent, a cardiotonic drug and an EC 3.1.4.* (phosphoric diester hydrolase) inhibitor.

What is the CAS number of Pimobendan?

The CAS registry number of Pimobendan is 74150-27-9. Other or deprecated CAS numbers: 118428-36-7, 118428-37-8, 118428-38-9.

What is the molecular formula and weight of Pimobendan?

The molecular formula of Pimobendan is C19H18N4O2 and its molar mass is 334.38 g/mol.

What is Pimobendan used for?

Use classes: Animal Drugs.

Is Pimobendan hazardous?

Pimobendan carries the GHS signal word "Danger". Main hazards: toxic if swallowed, harmful if swallowed, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pimobendan?

Pimobendan is usually classified under HS code 293379 (Lactams, other lactams). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pimobendan?

CompoundList lists 96 suppliers of Pimobendan in United States, China, Germany, United Kingdom and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Pimobendan in India?

1 supplier in India list Pimobendan on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Pimobendan?

Suppliers quote Pimobendan on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Pimobendan

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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