Hydrogen atom exchange of aromatic compounds in neutral near critical d 2 o has been improved by using a polymer supported sulphonic acid catalyst phenol aniline quinoline and substituted aromatic hydrocarbons are selectively ring perdeuterated in high yields with insignificant by product formation at 325 dgc for 24 h in d 2 o deloxan r. This company was established in order to produce and analyze stable isotope compounds stable isotope labeled compounds and nmr solvents over the recent years aftab bio chemical development company has been specialized in the development production analysis and marketing of stable isotopes and stable isotope labeled compounds. More than 6000 stable isotope labeled compounds tracers are commercially available for use in metabolic studies with a stable isotope labeled compound used as an internal standard for each metabolite with a biphasic decline the first part of the curve represents initial metabolism and uptake by tissues. Synonyms aceturic acid 13c215n 2 acetylaminoacetic acid 13c215n 2 acetamidoacetic acid13c215n acetamidoacetic acid13c215n acetylaminoacetic acid13c215n . Synonyms 7 3r 3 aminohexahydro 1h azepin 1 yl 8 chloro 1 cyclopropyl 6 fluoro 14 dihydro 4 oxo 3 quinolinecarboxylic acid d4 hydrochloride
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