Pharmaceutical crystalline complexes of sulfamethazine with saccharin: same interaction site but different ionization states†
Abstract
Sulfamethazine (SMT), a widely used antibacterial drug, can form either a 1 : 1 salt or a 1 : 1 cocrystal with saccharin (SAC), an artificial sweetener. Interestingly, the two crystalline complexes possess the same main intermolecular interaction sites, except the locations of the acidic proton are different.