(NYT) – City officials — and one determined mother — are working to stop the spread of cychlorphine, which is far more potent than fentanyl.

The death occurred in Ms. Lacourte’s three-bedroom apartment in the affluent Lower Nob Hill neighborhood on April 7.

Seventeen days later, San Francisco health officials held a news conference to warn that a synthetic opioid had emerged that was deadlier than fentanyl, which was still killing dozens of people in the city each month.

Cychlorphine is one of an array of new, deadly drugs upending the illicit drug market and confounding cities that are only now beginning to get a handle on fentanyl. These novel drugs can be made by amateur chemists anywhere, and they are harder to trace, their effects on the human body harder to reverse. (Read More)