Characterization of α-Keto Acids as Quinoxalinols 1
✍ Scribed by Morrison, D. C.
- Book ID
- 126184036
- Publisher
- American Chemical Society
- Year
- 1954
- Tongue
- English
- Weight
- 138 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0002-7863
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📜 SIMILAR VOLUMES
By use of a relatively new mixed stationary phase, complete separation of the branchedchain cy-keto acids as O-trimethylsilyl-quinoxalinol derivatives is achieved within 10 min by packed column gas chromatography. Precise quantification of less than 5 nmol of cr-keto acids in biological samples is p
Quinoxalinol t-butyldimethylsilyl ethers were prepared from three branched-chain and from two aliphatic unbranched 2-keto acids. The electrou impact (EL) mass spectra display pronounced [M-57]+ ions. With 39-51'/0 of total ion current contained within them, sensitivity is greater than on chemical io