CAS Number: 85006-82-2 Molecular Weight: 1569.88 Salt Form: TFA Purity: >96% Sequence (3-letter): Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Gln-Phe-Lys-Val-Val-Thr-OH Sequence (1-letter): YGGFLRRQFKVVT-OH Storage: -20 ?C or below Dynorphin B, porcine, also known as Rimophin, is an endogenous opioid peptide. It is formed via the proteolytic cleavage of leumorphin. Dynorphin B acts as a kappa-opioid receptor agonist with some selectivity towards the 1b sub-type.