D 1436 (OTTO) 1,4-Dibromobutane, 98% Cas 110-52-1 - used to investigate the metabolism of two halopropanes: 1,3-dichloropropane and 2,2-dichloropropane. D 1436 (OTTO) 1,4-Dibromobutane, 98% Cas 110-52-1 - used as reagent during the synthesis of diazadioxa oxovanadium(IV) macrocyclic complexes2.