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2, 5-Difluoronitrobenzene CAS 364-74-9 C6h3f2no2 1, 4-Difluoro-2-Nitro-Benzen - 2...
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https://pubchem.ncbi.nlm.nih.gov/patent/EP-0270970-B1
Process for preparing 3,5 dichloro-2,4 difluoronitrobenzene - Patent EP-0270970-B1 - PubChem
EP-0270970-B1 chemical patent summary.