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Modified amino acids and compositions comprising the same for delivering active agents

  • US 6,071,510 A
  • Filed: 04/23/1997
  • Issued: 06/06/2000
  • Est. Priority Date: 03/31/1995
  • Status: Expired due to Term
First Claim
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1. A compound selected from the group consisting of ##STR11## and salts thereof.

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