数据之源，洞见之始

Metabolite Card

Note

Phenolphthalein appears as white or yellowish-white to pale orange fine crystalline powder. Odorless. Aqueous solution is acidic. Colorless to pH 8.5; pink to deep-red above pH 9. Colorless in presence of large amounts of alkali. Tasteless. (NTP, 1992) Phenolphthalein is a member of phenols. It is functionally related to a 2-benzofuran-1(3H)-one. Phenolphthalein was withdrawn in Canada due to concerns with carcinogenicity in 1997. Phenolphthalein is a natural product found in Caragana conferta with data available. Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound. Phenolphthalein can cause cancer according to The Food and Drug Administration (FDA) and The National Toxicology Program. Phenolphthalein was withdrawn in Canada due to concerns with carcinogenicity in 1997. An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.