Storage conditions
Storage time(days)
Assay (based on the labeled amount of cefpiramide)
crystalline form
amorphous form
A-1
A-2
B-1
B-2
B-3
Initial (0 day)
105.7%
106.3%
97.2%
94.4%
90.8%
40°C/75% RH
10 days
106.1%
105.8%
93.4%
90.5%
87.6%
20 days
105.0%
105.1%
91.7%
91.0%
84.3%
40 days
104.6%
91.4%
89.6%
83.2%
60 days
103.5%
104.1%
88.4%
85.8%
82.1%
Maximum change
-2.2%
-8.8%
-8.6%
-8.7%
60°C/75% RH
30 days
103.1%
104.0%
82.8%
77.6%
75.7%
103.4%
73.5%
64.2%
66.3%
-2.6%
-2.3%
-23.7%
-30.2%
-24.5%
