title: Fluorescein isothiocyanates: improved synthesis and purity. Spectral studies.
mesh_terms: D004121:Dimethyl Sulfoxide; D005069:Evaluation Studies as Topic; D005452:Fluoresceins / Q000138:chemical synthesis* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008722:Methods; D013055:Spectrophotometry, Infrared; D013861:Thiocyanates / Q000138:chemical synthesis* / Q000302:isolation & purification
chemical_list: D005452:Fluoresceins; D013861:Thiocyanates; D004121:Dimethyl Sulfoxide