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Indole is an organic compound with the formula C 6 H 4 CCNH 3. Indole is classified as an aromatic heterocycle. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered pyrrole ring. Indoles are derivatives of indole where one or more of the hydrogen atoms have been replaced by substituent groups.
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The first indole alkaloid, strychnine, was isolated by Pierre Joseph Pelletier and Joseph Bienaimé Caventou in 1818 from the plants of the genus Strychnos. The correct structural formula of strychnine was determined only in 1947, although the presence of the indole nucleus in the structure of strychnine was established somewhat earlier.
The Urdu Wikipedia (Urdu: اردو ویکیپیڈیا), started in January 2004, is the Standard Urdu-language edition of Wikipedia, a free, open-content encyclopedia. [1] [2] As of 19 January 2025, it has 216,693 articles, 189,456 registered users and 7,469 files, and it is the 54th largest edition of Wikipedia by article count, and ranks 20th in terms of depth among Wikipedias with over ...
Oxindole (2-indolone) is an aromatic heterocyclic organic compound with the formula C 6 H 4 CHC(O)NH.It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing ring.
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Urdu in its less formalised register is known as rekhta (ریختہ, rek̤h̤tah, 'rough mixture', Urdu pronunciation:); the more formal register is sometimes referred to as زبانِ اُردُوئے معلّٰى, zabān-i Urdū-yi muʿallá, 'language of the exalted camp' (Urdu pronunciation: [zəbaːn eː ʊrdu eː moəllaː]) or لشکری ...
العربية; Asturianu; Azərbaycanca; বাংলা; Беларуская; भोजपुरी; Български; Brezhoneg; Чӑвашла; Čeština