5l5-Phosphaspiro[4.4]nona-1,3,6,8-tetraene(9CI) is a chemical compound registered under CAS number 23725-25-9, with the molecular formula C8H9 P and a molecular weight of about 136.13 g/mol. It is also known as 5-Phospha(5-PV)spiro[4.4]nona-1,3,6,8-tetraene(8CI); 1,1'-Spirobiphosphole. ChemRoots supplies 5l5-Phosphaspiro[4.4]nona-1,3,6,8-tetraene(9CI) for laboratory research and bulk production; product code 1209722. Send an inquiry for purity, packaging, price and lead time.