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I6504 Sigma

(−)-Isoproterenol hydrochloride

Synonym: (−)-Isoprenaline hydrochloride, (−)-N-Isopropyl-L-noradrenaline hydrochloride, (R)-3,4-Dihydroxy-α-(isopropylaminomethyl)benzyl alcohol hydrochloride



Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Biochem/physiol Actions

β-adrenoceptor agonist; increases cytosolic cAMP.


1 g in poly bottle

100, 500 mg in poly bottle

Features and Benefits

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.

Legal Information

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

Price and Availability

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 

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. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
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 or view 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, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
What can be used to make a solution of (−)-Isoproterenol hydrochloride, Product I6504?
We test the solubility of (−)-Isoproterenol hydrochloride in water at a concentration of 50 mg/mL. Isoproterenol hydrochloride is also soluble in ethanol at 20 mg/mL.
Can I use a brownish-pink solution of (−)-Isoproterenol hydrochloride, Product I6504?
Aqueous solutions become pink to brownish-pink when exposed to air, and almost immediately so when made alkaline. This color change indicates degradation.
How should (−)-Isoproterenol hydrochloride, Product I6504, be stored?
(−)-Isoproterenol hydrochloride is a powder that needs to be stored at -20°C.
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Protocols & Articles
Peer-Reviewed Papers


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