Determination of salicylic acid in acetylsalicylic acid by second derivative u.v.-spectrophotometry.
D001241:Aspirin / Q000032:analysis*; D004146:Dioxanes; D012459:Salicylates / Q000032:analysis*; D020156:Salicylic Acid; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
D004146:Dioxanes; D012459:Salicylates; D020156:Salicylic Acid; D001241:Aspirin