2.6.99.3 9 - Hydroxyurea 30°C, pH 8.0 721306 2.6.99.3 9 - Hydroxyurea wild-type, pH 8.0, 30°C 738218 2.6.99.3 18 - Hydroxyurea mutant Y97F, pH 8.0, 30°C 738218