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Small scale production / No-pressure distillation / Drying, (No-pressure/Vacuum) / Bromination / Ullman reaction / Crushing ( >=1mm ) / Synthesis of chemical reagent and pharmaceutical intermediate / Liquid chromatography analysis（LC） / Hydrogen cyanide, Sodium cyanide, Potassium cyanide / Oxidation, Peroxide / Vacuum distillation / Reduction, Metalic hydride / Nitration / Purification, Preparative Isolation / Gas chromatography analysis / Specific gravity / Column purification / Fluorination / Grignard reaction / Bulk specific gravity / Reduction, High/Middle-pressure / Flaker / Sulfonation / Production of pharmaceuticals/cosmetics / Buchwald-Hartwig cross coupling / Extraction / Crystallization / Oxidation, Nitric acid / Wittig reaction / Wolff-Kishner-reduction / Thin layer chromatograph(TLC) / Fusing point / Recrystallization / Esterification / Filtration / Metal contents reduction / Kolbe-Schmitt reaction / Cyanation / Vilsmeier reaction / Friedel-Crafts reaction / Dehydration / Rearrangement / Decarbonation /