CAS 51661-19-9 appears in our catalog under these names: 1,2–bis(2–nitrophenoxy)ethane, Ethylene Glycol Bis(2-nitrophenyl) Ether, >98.0%(GC), 1,2-Bis(o-nitrophenoxy)ethane 98%, ETHYLENE GLYCOL BIS(2-NITROPHENYL) ETHER, 97%. Offered by: GLPBio, TCI, Ambeed, Fluorochem. Available pack sizes: 100g, 25g, 1g, 5g, 500g.