6.2.1.11 - 35 20 min, stable 592 6.2.1.11 25 - pH 6.5-8.5, 1 h, stable 592 6.2.1.11 35 - 20 min, pH 7.4, stable 592 6.2.1.11 40 - 20 min, pH 7.4, 54% loss of activity 592 6.2.1.11 45 - 20 min, pH 7.4, 85% loss of activity 592 6.2.1.11 50 - 20 min, pH 7.4, 93% loss of activity 592 6.2.1.11 60 - 20 min, pH 7.4, 96% loss of activity 592