Novel calcitonin derivative and salt thereof
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United States of America Patent
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Apr 23, 1991
Issued Date -
N/A
app pub date -
May 17, 1989
filing date -
Jul 8, 1987
priority date (Note) -
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Abstract
There is disclosed a calcitonin derivative and its salt, comprising an amino acid residue at the 1-position of calcitonin which is a cyclic amino acid residue represented by the formula: ##STR1## wherein X represents a sulfur atom or a methylene group; and n represents an integer of 0 or 1. and an amino acid residue at the 7-position which is a cysteine residue which may be substituted with an appropriate protective group.
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