Crystallization process

Details Crystallization process Crystallization process

1979-04-24

1981-03-31

Randolph, John D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

42424852, C07D41302

Patent

active

042594855

ABSTRACT:
The crystalline D-sesquisodium salt of the diacid of the formula ##STR1## and process for its preparation via acetone dilution of an aqueous solution of non-crystalline D,L-diacid and D,L-disodium salt.

REFERENCES:
patent: 4138486 (1979-02-01), Narisada et al.
patent: 4201782 (1980-05-01), Narisada et al.
Hawley, The Condensed Chemical Dictionary, Ninth Edition, p. 770, Van Nostrand Reinhold Co., NY, copyright ed. 1977.
Grant, Hackh's Chemical Dictionary, 4th Ed., p. 606, McGraw-Hill Book Co., NY, copyrighted 1969.

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