4-06-00-01319 (Beilstein Handbook Reference) 546-71-4 8053-54-1 Armin (ester) Armine Arminum BRN 1990082 Ethoxy-4-nitrophenyloxyethyl-phosphineoxide Ethyl p-nitrophenyl ethylphosphonate Ethyl-4-nitrophenyl ethylphosphonate Ethylphosphonic acid ethyl p-nitrophenyl ester Phosphonic acid, ethyl-, ethyl p-nitrophenyl ester p-Nitrophenyl-O-ethyl ethylphosphonate p-Nitrophenyl-O-ethyl ethylphosphonate [JAN]