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Chemistry of lichen constituents—VI: Mass spectra of usnic acid, lichexanthone and their derivatives

✍ Scribed by R. M. Letcher


Publisher
John Wiley and Sons
Year
1968
Tongue
English
Weight
279 KB
Volume
1
Category
Article
ISSN
1076-5174

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Chemistry of lichen constituents—VII: Ma
✍ R. M. Letcher 📂 Article 📅 1968 🏛 John Wiley and Sons 🌐 English ⚖ 426 KB

The mass spectra of three methoxypulvic dilactones, four methyl esters of methoxypulvic acids and five methyl ethers of pulvic acid derivatives have been measured and rationalised empIoying accurate mass measurements and metastable peak assignments to substantiate the proposed fragmentations and rea