Packaging and storage—
Preserve in tight containers suitable for maintaining sterile contents, holding one pellet each.
Solubility in alcohol—
A solution of 25 mg of powdered Pellets in 1 mL of alcohol is clear and practically free from insoluble residue.
Identification—
B:
Ultraviolet Absorption 
197U
—
Solution:
10 µg per mL.
Medium:
alcohol.
Absorptivities at 240 nm, calculated on the dried basis, do not differ by more than 3.0%.
Specific rotation 781S:
between +171
and +179
.
Test solution:
10 mg, undried, per mL, in dioxane.
Weight variation—
Weigh 5 Pellets singly, and calculate the average weight. The average weight is not less than 95% and not more than 105% of the labeled weight of C23H32O4, and each Pellet weighs not less than 90% and not more than 110% of the labeled weight of C23H32O4.
Assay—
Assay preparation—
Weigh and finely powder not fewer than 10 Pellets. Weigh accurately about 100 mg of the powder, dissolve it in sufficient alcohol to make 200.0 mL, and mix. Transfer 5.0 mL of this solution to a 250-mL volumetric flask, dilute with alcohol to volume, and mix. Transfer 20.0 mL of this solution to a glass-stoppered, 50-mL conical flask.
Procedure—
Proceed as directed for
Procedure under
Assay for Steroids 351. Calculate the quantity, in mg, of C
23H
32O
4 in the portion of Pellets taken by the formula:
10C(AU / AS).
