T 2335 (OTTO) Triphenyl phosphite, 97% Cas no 101-02-0 - used to convert alcohols to alkyl halides, as a peptide coupling agent, and, in combination with ozone, as a low-temperature source of singlet oxygen, and ligand for metal-catalyzed reactions. T 2335 (OTTO) Triphenyl phosphite, 97% Cas no 101-02-0 - used as a ligand in organometallic chemistry. Nickel complexes of this ligand are homogeneous catalysts for the hydrocyanation of alkenes.