• USA Home
  • M5391 - (±)-Metoprolol (+)-tartrate salt

M5391 Sigma-Aldrich

(±)-Metoprolol (+)-tartrate salt

≥98% (titration), powder

Synonym: (±)1-(Isopropylamino)-3-[p-(β-methoxyethyl)phenoxy]-2-propanol (+)-tartrate salt, Lopressor



Biochem/physiol Actions

β1-adrenoceptor antagonist.

Features and Benefits

This compound is a featured product for Neuroscience research. Click here to discover more featured Neuroscience products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

This compound was developed by Novartis. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Other Notes

Shelf-life of the powder is at least 4 years.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis


Certificate of Origin


Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products.Once you log onto our website, you will find the price and availability displayed on the product detail page.You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 orview local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What is the solubility of Product M5391, (±)-Metoprolol (+)-tartrate salt?
The product is soluble in water (>1 g/mL), methanol (> 500 mg/mL), chloroform (496 mg/mL), acetone (1.1 mg/mL), acetonitrile (0.89 mg/mL), and hexane (0.001 mg/mL). This information can be found at in the following reference: Merck Index, 12th ed., Entry# 6235.
Has Product M5391, (±)-Metoprolol (+)-tartrate salt, been tested in Cell Culture?
This product has not been tested for use in Cell Culture applications.
What are the recommended storage conditions for Product M5391, (±)-Metoprolol (+)-tartrate salt?
This product can be stored at room temperature. It should be stored in a tightly closed light-resistant container.
What is the optical activity of Product M5391, (±)-Metoprolol (+)-tartrate salt?
This compound has two centers of optical activity. In the metoprolol, both optical isomers (dextrorotatory and levorotatory) are present. In the tartrate portion, only one optically active isomer is present, the (+) form
What is the ratio of metoprolol to tartrate in Product M5391, (±)-Metoprolol (+)-tartrate salt?
According to the molecular formula (C15H25NO3)2 C4H6O6, there are two metroprolol molecules to one tartrate.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
Show more questions

Making Headway

Milli-Q® Water Purification Solutions
Protocols & Articles


Antihypertensive Agents

Download BioFiles v7 n5 (3.18 Mb PDF) Back to Pharmaceutical Drugs and Drug Candidates homepage
Sami Barghshoon
BioFiles v7 n5, 2012, 5–20
Keywords: AGE, Antihypertensives, Cardiovascular, Clinical, Diuretics, PAGE, Pharmaceutical, Reductions

Discover Bioactive Small Molecules for Neuroscience

The nervous system, comprised of the brain and spinal cord (central nervous system, or CNS) and network of nerves that connects the CNS to the rest of the body (peripheral nervous system, or PNS) is ...
Keywords: Bioactive small molecules, Central Nervous System, Diseases, Metabolism, Neurodegenerative Diseases, Neuroscience, Neurotransmission, Neurotransmitters

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?