4-04-00-03465 (Beilstein Handbook Reference) 814-29-9 AI3-51001 BRN 1761977 Butyphos EINECS 212-394-3 NSC 41935 NSC 65484 Phosphine oxide, tributyl- TRIBUTYLPHOSPHINE OXIDE Tri-n-butylphosphine oxide Tributylfosfinoxid [Czech] Trisbutylphosphine oxide