Colorimetric assay of 4,6-unsaturated-3-keto steroids using sodium picrate reagent

NMR assay of diastereoisomers of 7-chlor

NMR assay of diastereoisomers of 7-chloro-3,3a-dihydro-2-methyl-2h, 9h- isoxazolo(3,2-b)(1,3)benzoxazin-9-one using deuterated tris(1,1,1,2,2,3,3-heptafluoro-7,7-dimethyl-4,6-octanedionato)europium III shift reagent

✍ Philip Reisberg; Ian A. Brenner; Jerome I. Bodin 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 English ⚖ 398 KB

A simple, rapid, and quantitative NMR method was developed for the determination of the ratio of the diastereoisomers present in 7-chloro-3,3a-dihydro-2-methyl-2H, 9H-isoxazolo(3,2-b)(1,3)benzoxazin-9-one (I). Deuterated tris(1,1,1,2,2,3,3heptafluoro-7,7-dimethyl-4,6-octanedionato)europium I11 shift