Ethinyl estradiol Drospirenone
Sample Name RT Area RT Area
ACID 1.452 2125132 5.188 1507952
BASE 1.450 2266435 5.183 1591152
PEROXIDE 1.454 2263747 5.192 1578856
WATER 1.455 2227253 5.194 1545941
LIGHT 1.456 2281245 5.195 1583567
Mean   2232762   1561493
SD   63362   34558
%RSD   2.8   2.2
Table 2: Results of forced degradation studies.