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19-nor-vitamin D analogs with 3,2-dihydrofuran ring

  • US 7,648,974 B1
  • Filed: 07/10/2008
  • Issued: 01/19/2010
  • Est. Priority Date: 07/10/2008
  • Status: Expired due to Fees
First Claim
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1. A compound having the formula:

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