143113-45-5 BQ 3020 BQ-3020 Endothelin 1 (pig reduced), 1-de-L-cysteine-2-de-L-serine-3-de-L-cysteine-4-de-L-serine-5-de-L-serine-6-(N-acetyl-L-leucine)-11-L-alanine-15-L-alanine- N-Acetyl-leu-met-asp-lys-glu-ala-val-tyr-phe-ala-his-leu-asp-ile-ile-trp