1. Measurement and Correlation of Solubility of Clopidogrel Hydrogen Sulfate (Metastable Form) in Lower Alcohols
2. Solubility of Clopidogrel Hydrogen Sulfate (Form II) in Different Solvents
3. Badorc, A.; Frehel, D.Clopidogrel and salts such as clopidogrel hydrogen sulfate; anticoagulants. U.S. Patent 4,847,265, 1989.
4. Bousquet, A.; Castro, B.; Saint-Germain, J.Polymorphic form of clopidogrel hydrogen sulphate. U.S. Patent 6,504,030, 2003.
5. Bousquet, A.; Castro, B.; Saint-Germain, J.Orthorombic polymorph of clopidogrel hydrogen sulfate with improved stability and lower solubility; antithrombotic agent; specific crystal structure and thermodynamic properties. U.S. Patent 6,429,210, 2002.