has role polypeptide oligopeptide antineoplastic agent contraceptive drug gonadotropin releasing hormone agonist triptorelin CHEBI:63633 An oligopeptide comprising pyroglutamyl, histidyl, tryptophyl, seryl, tyrosyl, <small>D</small>-tryptophyl, leucyl, arginyl, prolyl and glycinamide residues joined in sequence. It is an agonist analogue of gonadotropin-releasing hormone. anti-HIV agent