✦ LIBER ✦
Mass spectroscopy of natural products. 20—Quinazoline carboxylic acids 4—Comparative positive and negative ion mass spectroscopic studies of 3,4-dihydroquinazolin-4-on-3-ylalkanoic acids and 3,4-dihydro-1,2,3-benzotriazin-4-on-3-ylalkanoic acids
✍ Scribed by Jürgen Schmidt; Manfred Süsse; Siegfried Johne
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 386 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
The mass spectroscopic behaviour of 3,4-dihydmquinazolin-4-on-3-ylalkanoic acids and 3,4-d&ydro-1,2,3benzotriazin-4-on-3-ylalkanoic acids was studied under positive and negative ionbation. "he Merences in using some "N-labelled derivatives. fragmentation both between the ionization modes and between the two heterocyclic systems are dkussed bY