title: Comparison of extraction procedures for insoluble food dyes in illicit drug preparations.
mesh_terms: D002853:Chromatography, Liquid; D002855:Chromatography, Thin Layer; D004396:Coloring Agents / Q000302:isolation & purification*; D004739:England; D005505:Food Coloring Agents / Q000302:isolation & purification*; D005554:Forensic Medicine; D013287:Illicit Drugs / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D013053:Spectrophotometry
chemical_list: D004396:Coloring Agents; D005505:Food Coloring Agents; D013287:Illicit Drugs; D004364:Pharmaceutical Preparations