12072 Aldrich


  • CAS Number 618-39-3

  • Linear Formula C6H5C(=NH)NH2

  • Molecular Weight 120.15

  •  Beilstein Registry Number 606020

  •  EC Number 210-546-3

  •  MDL number MFCD00042826

  •  PubChem Substance ID 57646968



Related Categories Building Blocks, Chemical Synthesis, Imines/Amidines, Nitrogen Compounds, Organic Building Blocks More...
Gene Information   human ... F10(2159), F2(2147), PLAT(5327), PLAU(5328), PLG(5340), PRSS1(5644)


Frequently Asked Questions

Frequently Asked Questions are available for this Product.


10, 50 g in glass bottle


Benzamidine was used in the preparation of heparan sulfate-rich proteoglycan from mouse mammary epithelial cells. It has been used to prevent enzymatic degradation during the purification procedure of bovine factor XII (Hageman factor).

Biochem/physiol Actions

Benzamidine is an inhibitor of plasmin and has been used in the radioimmunoassay of glucagon in human plasma. It prevents the destruction of Thyrotropin-releasing hormone (TRH) added to whole blood in vitro before radioimmunoassay of TRH.

Price and Availability

Laboratory Gloves
Safety & Documentation

Safety Information

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


Certificate of Analysis

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:
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. 
What solvents can be used to dissolve Benzamidine, Product 12072?
Based on our experience with this compound in quality control, we would expect it to be soluble in methanol (0.5g in 10mL of methanol).
The buffer preparation protocol calls for benzamidine. Should I use the free base or the hydrochloride hydrate salt?
It is possible that either the benzamidine or the benzamidine hydrochloride hydrate could work for your application. The major difference will be that the benzamidine hydrochloride hydrate (Product No. B6506) is expected to dissolve easier in aqueous solutions. Neither Product 12072 nor the salt Product B5606 is molecular biology, cell culture or biotechnology certified, so their performance once dissolved is likely to be similar.
What is the solution stability of Benzamidine, Product 12072?
Sigma-Aldrich does not perform formal solution stability testing on this material; however, it is expected to be sensitive to oxidation. It is recommended to prepare solutions fresh for each use.
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.
Show more questions
Protocols & Articles
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?