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Methyl 3-oxotetrahydrothiophene-2-carboxylate is used in the production of dihydro-thiophen-3-one.
Shinkwin, A. E.; Whish, W. J. D.; Threadgill, M. D. Synthesis of thiophenecarboxamides, thieno[3,4-c]pyridin-4(5H)-ones and thieno[3,4-d]pyrimidin-4(3H)-ones and preliminary evaluation as inhibitors of poly(ADP-ribose)polymerase (PARP). Bioorg. Med. Chem. 1999, 7 (2), 297-308..
Struharik, M.; Hrnciar, P. New method for preparation of 2,3-thiophenedicarboxylic and 3,4-thiophenedicarboxylic acids and their 4,5-dihydro and 2,5-dihydro analogs. Chem. Papers 1986, 40 (5), 639-648.
Hazard Statements: H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statements: P261-P280a-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. 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.