| Autor: |
Snedden, W., Parker, R. B., Carpanini, F. M. B. |
| Zdroj: |
Organic Mass Spectrometry; 1970, Vol. 4 Issue S1, p299-313, 15p |
| Abstrakt: |
A number of impurities have been extracted from yellow phenolphthalein by thin layer chromatography and characterized on the basis of their mass spectra. One of these by-products appears to be fluoran while the structure proposed for a second accounts for the properties ascribed to it by previous investigations. The bulk of the impurity appears to consist of condensation products of three molecules of phenol with two of phthalic anhydride. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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