Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Patent
1979-08-31
1981-02-24
Tovar, Jose
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
C07D24112
Patent
active
042529492
ABSTRACT:
Previously unknown and undescribed long chain (C-12 to C-18) monoesters of pyrazinetetracarboxylic acid have been prepared and shown to be effective surface active agents useful as detergents, sequestrants, and chelating agents for extractive metallurgy.
REFERENCES:
patent: 3915974 (1975-10-01), Cairncress
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