procaine

Of 27 Canadian samples studied since 2010, 14 active chemicals were discovered, including caffeine, methamphetamine, benzylpiperazine (BZP) and procaine.

Is there an ongoing development program for the procaine injector?

I mean I can see where you're coming from, even if it's a bad example (derivatives of cocaine are extremely common today in medicine--procaine, lidocaine, etc.--but Freud worked with what he had at the time).

Furthermore, AM404 inhibits sodium channels, as do the anesthetics lidocaine and procaine.[45] Either of these actions by themselves has been shown to reduce pain, and are a possible mechanism for paracetamol.

Three seconds later the game was done, the rat caught half across the areaway, gripped in gentle paws while a four-inch hollow steel needle plunged down from the proboscis of the hound to inject massive jolts of morphine or procaine.

Three seconds later the game was done, the rat, cat, or chicken caught half across the areaway, gripped in gentling paws while a four-inch hollow steel needle plunged down from the proboscis of the Hound to inject massive jolts of morphine or procaine.

Wikipedia says, "Once used as a first line treatment for syphilis, it has been replaced by the more effective and less toxic procaine penicillin since at least 1948."