S 2441 (OTTO) Sodium iodoacetate, ≥98% Cas 305-53-3 - used to induce animal osteoarthritis model system, which mimics both symptoms and histopathology of the human disease. S 2441 (OTTO) Sodium iodoacetate, ≥98% Cas 305-53-3 - used in protein sequencing (including by Sanger in sequencing bovine insulin) to prevent oxidation of -SH sidechains.