I 4225 (OTTO) Isopentyl nitrite, 96% Cas 110-46-3 - used as a radical initiator to functionalize multi-walled carbon nanotubes. I 4225 (OTTO) Isopentyl nitrite, 96% Cas 110-46-3 - used as a reagent in the preparation of 4-carboxy-phenyl diazonium salt tetrafluoroborate.