Testosterone specific rotation

A solution is prepared by dissolving 400 mg of testosterone, a male sex hormone, in 10.0 mL of ethanol and placing it in a sample tube 10.0 cm in length. The observed rotation of this sample at 25°C using the D line of sodium is +4.36°. Calculate the specific rotation of testosterone. 

The concentration of testosterone is 400 mg/10.0 mL = 0.0400 g/mL.The length of the sample tube is 1.00 dm. Inserting these values in the equation for calculating specific rotation gives... 

Androderm, anotiier transdermal system, is applied nightly to clean, dry skin on the abdomen, tiiigh, back, or upper arm. This system is not applied to die scrotum. Sites are rotated, witii 7 days between application to any specific site The system is applied immediately after opening the pouch and removing die protective covering. If the patient has not exhibited a therapeutic response after 8 weeks of tiierapy, another form of testosterone replacement therapy should be considered. 

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