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Malononitrile - also propanedinitrile, is a nitrile with the formula CH2(CN)2.
M 5251 (OTTO) Malononitrile, ≥99% Cas 109-77-3 - used as a raw material for the Gewald reaction of ketone or aldehyde to produce 2-aminothiophene using elemental sulfur and a base.