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
Some constituents of the lichen Parmelia cryptochlorophaea
β Scribed by Chicita F. Culberson
- Publisher
- John Wiley and Sons
- Year
- 1965
- Tongue
- English
- Weight
- 196 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0022-3549
No coin nor oath required. For personal study only.
β¦ Synopsis
Extraction of the lichen Parmelia cryptochhrophaea Hale gave cryptochlorophaeic acid (2.5 per cent), chloroatranorin (0.16 per cent), and caperatic acid (1.7 per cent).
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