4.2.3.2 1.5 - phosphate at pH 8.0 and 30°C 747739 4.2.3.2 1.5 - sulfate at pH 6.0 and 30°C 747739 4.2.3.2 1.5 - sulfate at pH 8.0 and 30°C 747739 4.2.3.2 8 - phosphate at pH 6.0 and 30°C 747739