Phenolphthaleins
Web10. nov 1998 · Phenolphthalein-modified β-CD, 1, was synthesized for the purpose of developing a new type of guest-responsive color change indicator. The pH titration curve of 1 depends on its concentration, suggesting that 1 exists not only as an self-inclusion form but also as an association form at a concentration of 10-4 M in neutral aqueous solution. … Webphenolphthalein. (fē′nōl-thăl′ēn′, -thăl′ē-ĭn, -thā′lēn′, -thā′lē-ĭn) n. A white or pale yellow crystalline powder, C 20 H 14 O 4, used as an acid-base indicator, in making dyes, and …
Phenolphthaleins
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WebIn the process for the preparation of phenolphthalein, the step comprising the reaction of phenol with phthalic anhydride in the presence of zinc chloride and from about 0.05 mol … WebToshiyuki Kato's 3 research works with 37 citations and 202 reads, including: Ring-Chain Tautomerism of Halogenated Phenolphthaleins: Vibrational Spectroscopic and …
WebPhenolphthaleins* Protein Binding Salicylates / metabolism* Serum Albumin, Bovine / metabolism* Spectrophotometry Staining and Labeling* Substances Aminobenzoates Aminosalicylic Acids ... WebThe therapeutic response and side effect profile of the different doses favoured 30 mg phenolphthalein as the optimum laxative dose. Although theoretically superior, phenolphthalein glucuronide was not found to be a more effective laxative compared to phenolphthalein in normal subjects.
Web15. apr 1998 · While chains of hydrogen bonds propagate in a number of directions in this structure, cyclic hydrogen bonding is not observed. 3',3"-Dinitrophenolphthalein, … WebPhenolphthalein, the active ingredient in many laxatives, was recently found to be a carcinogen in animal models. Human data suggest a laxative-colon cancer association, but few data specifically address the effects of phenolthalein-containing laxatives. We examined use of phenolphtalein-containing …
WebSynonyms for phenolphthalein in Free Thesaurus. Antonyms for phenolphthalein. 2 words related to phenolphthalein: laxative, acid-base indicator. What are synonyms for phenolphthalein?
WebIn this study, phenolphthaleins have been introduced into hybrid tetraarylethylene bridged six-membered benzene rings and five-membered thiophene rings to construct new multifunctional molecules responding to UV/Vis light, acid/base and water. Results showed that the titled molecules exhibited distinctive photochromism and acid-base discoloration … convert to spanish keyboardWebOther examples of substances of particular public interest about which NTP provided critical research findings include AZT (azidothymidine) and a number of drug combinations used to prevent mother-to-child transmission of HIV (human immunodeficiency virus); fluoride; polychlorinated biphenyls; hexavalent chromium; acrylamide; silicone fluid used in breast … falsifying hair testWebPhenolphthaleins Accession Number DBCAT001620 Description. A family of 3,3-bis(p-hydroxyphenyl)phthalides. They are used as CATHARTICS, indicators, and COLORING AGENTS. Drugs. Drug Drug Description; Phenolphthalein: A drug used for symptomatic relief of constipation and bowel cleansing prior to medical procedures. convert to spanish in wordWebThe filtrate is diluted to contain 40 to 50 grams of phenolphthalein per litre. This diluted solution is cooled and then run into such amount of a 20% sulphuric acid solution as to … falsifying health recordsWebA recent 2-year carcinogenicity/toxicology study determined that phenolphthalein (PHTH) is a multisite carcinogen in both mice and rats at all doses evaluated. In response to this … convert to spanish googleWeb1. Biliary elimination in female Wistar albino rats 3 h after i.p. injection of [3H]phenolphthalein, [3H]morphine, 14C-LSD and [14C]diphenylacetic acid was 90%, 45%, … convert to spanish textWeb2. A process of producing phenolphthalein which consists in heating a mixture of phenol and phthalic anhydride in the presence of anhydrous zinc chloride, adding to the mixture anhydrous aluminum chloride, continuing the heating of the mixture whilst stirring the same, and removing the zinc chloride, aluminum chloride, unreacted phenol and ... falsifying information orc