British Pharmacopoeia Volume V
Appendices
Appendix I A. General Reagents

Bisbenzimide

Bisbenzimide 4-{5-[5-(4-Methylpiperazin-1-yl)benzimidazol-2-yl]benzimidazol-2-yl}phenol trihydrochloride pentahydrate; C₂₅H₂₄N₆O,3HCl,5H₂O = 624 (23491-44-3)

General reagent grade of commerce.