Levonorgestrel hexanoate is a manufactured hormone used in a number of birth control methods.

13635-16-0

C27H38O3

410.59

Plan B;Levonorgestrel hexanoate

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years