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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-H330
Toxic if swallowed. Toxic in contact with skin. Fatal if inhaled.
Precautionary Statements: P260-P264b-P270-P271-P280-P284-P301+P310-P302+P352-P304+P340-P310-P312-P330-P361-P363-P501c
Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. Wear respiratory protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER or doctor/physician if you feel unwell. Rinse mouth. Remove/Take off immediately all contaminated clothing. Wash contaminated clothing before reuse. Dispose of contents/ container to an approved waste disposal plant