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Benzamidine hydrochloride

Basic information Safety Related Supplier
Benzamidine hydrochloride Basic information
Benzamidine hydrochloride Chemical Properties
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 26-37/39-36
  • WGK Germany 3
  • RTECS CV6260000
  • 3-21
  • HS Code 29252900
Benzamidine hydrochloride Usage And Synthesis
  • DescriptionBenzamidine hydrochloride is a reversible inhibitor of trypsin, trypsin-like enzymes, and serine proteases. A concentration of approximately 1 mM is used for general protease inhibition. To inhibit proteases from yeast, a range of 0.5 to 4.0 mM is used and it is for the most part interchangeable with pepstatin A.
    In addition to being a strong competitive inhibitor of trypsin, benzamidine HCl has been also shown to be a strong competitive inhibitor of thrombin and plasmin. It was also found to be as effective as aprotinin in the prevention of glucagon degradation in human plasma.
  • Chemical Propertieswhite to off-white powder
  • UsesBenzamidine is a reversible inhibitor of serine proteases, including trypsin, plasmin, and thrombin (Kis = 35, 350, and 220 μM, respectively). In addition to its use as a general serine protease inhibitor, benzamidine is used, when immobilized, to purify novel proteases.
  • PreparationTo a stainless steel rocking autoclave equipped with a stirrer is added 103.0 gm (1.0 mole) of benzonitrile, 214.0 gm (4.0 mole) of ammonium chloride, and 306.0 gm (18.0 mole) of ammonia is introduced by means of a transfer bomb. The reaction mixture is heated at 150°C for 18 hr (pressure: 1300-6500 psig), cooled, and, with appropriate precautions for the safe control of the excess ammonia, is vented to atmospheric pressure. The reaction mixture is extracted with ether to remove approximately 5% unreacted benzonitrile, and then extracted with hot acetonitrile or ethanol to separate the amidine hydrochloride from the unreacted ammonium chloride. Concentration of the latter affords 120.5 gm (77%) of benzamidine hydrochloride, m.p. 161-163°C.
    Preparation of Benzamidine Hydrochloride
  • Biological ActivityBenzamidine hydrochloride is an reversible competitive inhibitor of trypsin-like serine proteases, with Kis of 97 μM, 21 μM, 20 μM and 110 μM for uPA, trypsin, tryptase and factor Xa, respectively.
  • Safety ProfileModerately toxic byintraperitoneal route. When heated to decomposition itemits toxic vapors of NOx, HCl, and Cl-.
  • in vitroBenzamidine hydrochloride has weak inhibition for tPA and thrombin, with Kis of 750 μM and 320 μM, respectively.
Benzamidine hydrochloride Preparation Products And Raw materials
Benzamidine hydrochloride(1670-14-0)Related Product Information
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