20988-64-1 25866-72-2 83177-35-9 85847-86-5 CCK-7 CCK-7-sulfated CCK-7S Caerulein, 1-de(5-oxo-L-proline)-2-de-L-glutamine-3-de-L-aspartic acid-5-L-methionine- Cck(27-33) Cholecystokinin C-terminal heptapeptide cholecystokinin (27-33)