(Ala-1,3,11,15)ET-1 1,3,11,15-Ala-endothelin-1 1,3,11,15-Alanine-endothelin 1 121204-87-3 4-Ala-endothelin-1 4AlaET-1 ET-1(1,3,11,15-Ala) Endothelin 1 (pig reduced), 1-L-alanine-3-L-alanine-11-L-alanine-15-L-alanine- Endothelin 1, ala(1,3,11,15)- Endothelin 1, alanine(1,3,11,15)-