Butyric 2-chloro-3-hydroxy-3-methyl

Barcelo and co-workers [208] used negative ion electrospray MS as the detector in the analysis of eight acidic herbicides (benazolin, bentazone, 4-chloro-2-methyl-phenoxyacetic acid, 4-[4-chloro-2-methylphenoxy]butyric acid, 6- and 8-hydroxy-bentazone) in water. A C g column was used with a 30-min 20/80 —y 80/20 methanol/water (formic acid at pH 2.9) gradient. The detection limits were 0.03 pg/L. Co-elution of 6- and 8-hydroxybentazone occurred but these analytes were quantitated separately through the use of single ion monitoring (SIM). Excellent peak shapes were obtained and all other compounds were well resolved. 

CHLORO-9-FLUORO-17-HYDROXY-16-bata-METHYL-, BUTYRATE 25122-57-0... 

An interesting effect was found whilst studying the enantioselectivity of these reactions. Although several esters (ethyl-2-chloropropionate, ethyl lactate, ethyl-2-hydroxy hexanoate and ethyl-2-methyl butyrate) were converted into the amides with only low to moderate ee values, the ammoniolysis of ibuprofen (2 -chloro-ethyl)ester was highly enantioselective. At 56 % conversion the ee of the remaining (S)-ester was 96% (Scheme 12.2-3), corresponding with an E value of the ammoniolysis of 28. 

Synonyms 21 -Chloro-9-fluoro-17-hydroxy-16-methyl-pregna-1,4-diene-3,11,20-trione-17-butyrate 21 -chloro-11 -dehydrobetamethasone-17-butyrate Trade Names Emovate, Eumovate, Motivate Use Anti-inflammatory... 

Cl3H11N3, 3-Methyl-2-phenylimidazo[1,2-a]pyrimidine, 41B, 326 C13H13IN2, (E)-6-Methyl-6-azonia-2 -azastilbene iodide, 46B, 229 C13H14CINO2, Methyl 2-chloro-3-(indol-3-yl)butyrate, 44B, 237 C13H15NO3, Methyl 2-hydroxy-3-(indol-3-yl)butyrate, 44B, 237 C13H16N2O2, Melatonin, 40B, 249... 

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See also in sourсe #XX -- [ ]

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