It is the BRP molecule, or BRINP2-related peptide, discovered in 2025.

You can buy it from several vendors, such as https://phoenixpeptide.com/products/brinp2-related-peptide-b...

or

https://www.novoprolabs.com/p/brp-brinp2-related-peptide-319...

However, these are for research and not human use: delivery is unsolved, not pharmaceutical-grade purity, and no human safety data exists yet. So best to avoid for now, even though it is a very exciting discovery.