B7-33 (Biased RXFP1 Relaxin B-Chain Analogue)

✅ Synthetic 33-aa single-chain relaxin-B-chain analogue ✅ Biased RXFP1 agonist — ERK1/2 anti-fibrotic without cAMP pro-cancer signalling ✅ Hossain/Howe (Florey Institute) 2017 Nat Commun engineered alternative to Serelaxin ✅ Cardiac/kidney/liver/lung fibrosis research; pre-eclampsia models ✅ ~MW 3,800 Da; published 25-50 µg/kg/d SC mouse dosing B7-33 contains synthetic 33-aa relaxin-B-chain analogue research peptide.