1-De(5-oxo-L-proline)-2-de-L-glutamine-3-L-asparagine-5-(O-sulfo-L-tyrosine)caerulein 126985-56-6 Asn-tyr(SO3)-tyr(SO3)-gly-trp-met-asp-phe-NH2 Caerulein, 1-de(5-oxo-L-proline)-2-de-L-glutamine-3-L-asparagine-5-(O-sulfo-L-tyrosine)- Cionin