C 3031 (OTTO) Cyclopropanecarbonyl chloride, 98% Cas 4023-34-1 - used as an alkylating reagent in the preparation of some chemical building blocks such as formylcyclopropane, cyclopropanecarboxylic acid hydrazide, bis(cyclopropylcarbonyl) peroxide, 1-cyclopropanecarboxamide, 2-cyclopropylcarbonylcyclohexane-1,3-diones and cyclopropyl analog of triazolopiperazine-amides.