Bisbiguanides are a class of chemically related compounds known for their bactericidal properties. Generally considered to be of the generic formula: R1 R2 N.C(:NR6)NH.C(:NH)NH.CH2 X--(CH2)3 NH.C(:NH)NH.C(:NR7)NR3 R4 V. These compounds include the antiseptics chlorhexidine and alexidine. They are named for having two biguanide moieties, which themselves are named for having two guanide parts.