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Benzamidine hydrochloride


Linear Formula:
C6H5C(=NH)NH2 · HCl
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level






169-173 °C (lit.)


water: soluble

SMILES string




InChI key


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Storage Class Code

11 - Combustible Solids



Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

  1. 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.

  2. 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.

  3. 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.

  4. 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. 

  5. Does Product 434760, Benzamidine hydrochloride, contain waters of hydration?

    Sigma-Aldrich does not measure the water content directly of this product. However, based on the way the material is produced and handled, we would not expect any waters of hydration to be present. The corresponding hydrate product is found under Product No. B6506.

  6. What is Product 434760, Benzamidine hydrochloride, soluble in?

    We would expect benzamidine hydrochloride to be soluble in water to at least 50 mg/mL. However, gentle heating may be required to solubilize it at this concentration.

  7. What can Product 434760, Benzamidine hydrochloride, be used for?

    Benzamidine hydrochloride has been shown to act as a reversible inhibitor of trypsin, trypsin-like enzymes and serine proteases.

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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