R-30490, also known as 4-methoxymethylfentanyl, is a powerful opioid drug similar to carfentanil, which is use to tranquilize large animals. It was created by scientists at Janssen Pharmaceutica, led by Paul Janssen, who were studying fentanyl-related compounds.

Chemical Structure

R-30490 has a chemical formula of C₂₄H₃₂N₂O₂ and a molecular weight of about 380.53 g/mol. Its full chemical name is N-[4-(Methoxymethyl)-1-(2-phenylethyl)piperidin-4-yl]-N-phenylpropanamide.

Potency and Receptor Activity

This drug is a strong activator of the μ-opioid receptor, which is responsible for pain relief and feelings of euphoria. Among fentanyl-like substances tested, R-30490 was to be the most selective for this receptor. However, it has not been approve for medical use in humans.

Side Effects and Risks

The side effects of R-30490 are similar to those of other fentanyl analogs. These can include itching, nausea, and serious breathing problems, which can be life-threatening. Fentanyl-related substances have been link to numerous deaths in Europe and former Soviet countries since the early 2000s.

Legal Status

In the United States, R-30490 is classified as a Schedule I controlled substance, meaning it is illegal to manufacture, distribute, or possess.

Conclusion

R-30490 is a potent opioid with significant risks and no approved medical use in humans. Its potential for abuse and severe side effects make it a substance of concern in public health and law enforcement.