Large-scale synthesis of high purity “Phosreagent” useful for oligonucleotide therapeutics http://www.sciencedirect.com/science/article/pii/S0022328X04007 Journal of Organometallic Chemistry Volume 690, Issue 10, 16 May 2005, Pages 2603–2607 16th International Conference on Phosphorus Chemistry International Conference on Phossphorus Chemistry