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It is used as a pharmaceutical intermediate. It is also used in the synthesis of fluorine-containing alkyl 2-cyano-3-oxocarboxylates and also in the syntheses of pyrazolo [1, 2-a] pyrazole and pyrazolo [5, 1-b] [1, 3] oxazine derivatives.
Gustav E. Lienhard, et al. The Reaction of Carbanions with N,S-Diacetylcysteamine. A Model for Enzymatic Carbon-Carbon Condensation.J. Am. Chem. Soc., 1965,87(17), 3863-3874.
Matthieu Desroses, et al. A Convenient Microwave-Assisted Propylphosphonic Anhydride (T3P®) Mediated One-Pot Pyrazolone Synthesis.Eur. J. Org. Chem.,2013,2013 (26), 5879-5885.
Hazard Statements: H301-H311-H331
Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled.
Precautionary Statements: P261-P280h-P301+P310a-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/clothing. IF SWALLOWED: Immediately call a POISON CENTER/doctor IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.