C 2165 (OTTO) N-Chlorosuccinimide, 99% Cas 128-09-6 - used as pharmaceutical intermediate and antibiotic drugs intermediate. C 2165 (OTTO) N-Chlorosuccinimide, 99% Cas 128-09-6 - used in the microdetermination of hydrazine salts by titrimetry as well as in the detection of arsenic in the +3 oxidative state. It is also employed in the production of rubber additives.