1-(beta-Mercapto-beta,beta-cyclopentamethylenepropionic acid)-2-ile-4-thr-arginine vasopressin 88686-54-8 Arginine vasopressin, beta-mercapto-(beta,beta)cyclopentamethylenepropionic acid(1)-ile(2)-thr(4)- Argipressin, beta-mercapto-(beta,beta)cyclopentamethylenepropionic acid(1)-ile(2)-thr(4)- Argipressin, beta-mercapto-(beta,beta)cyclopentamethylenepropionic acid(1)-isoleucyl(2)-threonine(4)- d(CH2)5-2-Isoleucyl-4-threonine-arginine vasopressin d(CH2)5-Ile-thr-arg-VP