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Compounds and compositions for delivering active agents

  • US 6,663,887 B2
  • Filed: 02/21/2002
  • Issued: 12/16/2003
  • Est. Priority Date: 04/22/1993
  • Status: Expired due to Fees
First Claim
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1. A composition comprising:

  • (a) a compound having the formula embedded image

    or a salt thereof; and

    (b) an active agent that is a peptide.

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