Benzamidine

Benzamidine
Names
	IUPAC name Benzenecarboximidamide
Identifiers
CAS Number	618-39-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:41033 ;
ChEMBL	ChEMBL20936 ;
ChemSpider	2242 ;
ECHA InfoCard	100.009.589
KEGG	C01784 ;
PubChem CID	2332;
CompTox Dashboard (EPA)	DTXSID8045012 ;
	InChI InChI=1S/C7H8N2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H3,8,9) Key: PXXJHWLDUBFPOL-UHFFFAOYSA-N ; InChI=1/C7H8N2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H3,8,9) Key: PXXJHWLDUBFPOL-UHFFFAOYAU;
	SMILES [N@H]=C(N)c1ccccc1;
Properties
Chemical formula	C7H8N2
Molar mass	120.15 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Benzamidine is a reversible competitive inhibitor of trypsin, trypsin-like enzymes and serine proteases.

It is often used as a ligand in protein crystallography to prevent proteases from degrading a protein of interest; the triangular diamine group at the bottom gives it a very obvious 'stick-man' shape which shows up in difference density maps.