December 23, 2008
Image of Morphine

Morphine is the most important alkaloid in opium, an extract of the poppy Papaver somniferum. A good grade of opium contains 9–14% of anhydrous morphine. It has been used as a potent painkiller for more than 150 years, especially after the development of the hypodermic needle. But it is extremely addictive and withdrawal is difficult.

Chemical Abstract Service - a division of ACS

Learn more about this molecule from CAS, the most authoritative and comprehensive source for chemical information.

Molecule of the Week needs your suggestions!

If your favorite molecule is not in our archive, please send us a message. The molecule can be notable for its current or historical importance or for any quirky reason. Thank you!

Stay Ahead of the Chemistry Curve

Learn how ACS can help you stay ahead in the world of chemistry.