Bisbiguanides are a class of chemically related compounds known for their bactericidal properties. Generally considered to be of the generic formula: R<sup>1</sup> R<sup>2</sup> N.C(:NR<sup>6</sup>)NH.C(:NH)NH.CH<sub>2</sub> X--(CH<sub>2</sub>)<sub>3</sub> NH.C(:NH)NH.C(:NR<sup>7</sup>)NR<sup>3</sup> R<sup>4</sup> 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.