- 2-Butyl-3-((2′-(2-trityl-2H-tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)-1,3-diazaspiro[4.4]non-1-en-4-one,95%, 5g
- 2-Butyl-3-((2′-(2-trityl-2H-tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)-1,3-diazaspiro[4.4]non-1-en-4-one,95%, 1g