pyrocatechol मीनिंग इन हिंदी

उदाहरण वाक्य

1. It is the dimethyl ether derived from pyrocatechol.
2. Heating catechin past its point of decomposition releases pyrocatechol ( also called catechol ), which explains the common origin of the names of these compounds.
3. Epigallocatechin and gallocatechin contain an additional phenolic hydroxyl group when compared to epicatechin and catechin, respectively, similar to the difference in pyrogallol compared to pyrocatechol.
4. Most polyphenols contain repeating phenolic moieties of pyrocatechol, resorcinol, pyrogallol, and phloroglucinol connected by esters ( hydrolyzable tannins ) or more stable C-C bonds ( nonhydrolyzable condensed tannins ).
5. EDP ( an aqueous solution of ethylene diamine and pyrocatechol ), displays a / selectivity of 17X, does not etch silicon dioxide as KOH does, and also displays high selectivity between lightly carcinogenic, so care is required in their use.