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Process for preparation of isosulfan blue

DC CAFC
  • US 9,353,050 B2
  • Filed: 12/02/2011
  • Issued: 05/31/2016
  • Est. Priority Date: 05/11/2007
  • Status: Active Grant
First Claim
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1. A compound N-[4-[[4-(diethyl amino)phenyl](2,5-disulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-ethylethanaminium, sodium salt having a purity of at least 99.0% by HPLC.

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