ETA receptor antagonist [BQ-610] 30-fold more potent ETA antagonist than BQ-123 in pig aortic smooth muscle membrane assay, same activity as BQ-123 when tested on pig cerebellum membrane.Product SpecificationAlternative Name: BQ-610 Sequence: (Hexahydro-1H-azepinyl)carbonyl-Leu-D-Trp(CHO)-D-Trp-OH Formula: C36H44N6O6 MW: 656.8 Quantity: *Sold as net peptide weight. Long Term Storage: -20°C