Norethindrone hormone molecule

Norethindrone hormone molecule

A619/0046

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Caption

Norethindrone molecule. Computer graphic of a molecule of the contraceptive hormone norethindrone (chemical formula: C18.H26.O2). The atoms are represented as spheres, and are colour coded: carbon is green, hydrogen is white and oxygen is blue. Norethindrone has a similar mode of action to the natural female hormone progesterone, and it is commonly used in contraceptive pills. It is taken either by itself, or combined with a synthetic oestrogen. These oral contraceptives interfere with the body's natural hormone balance to prevent ovulation, and hence the risk of pregnancy.

Release details

Model release not required. Property release not required.

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