Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Recombinant or stably-transformed bacterium encoding one or...
Patent
1980-01-08
1981-06-23
Waltz, Thomas A.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Recombinant or stably-transformed bacterium encoding one or...
564 44, A01N 920, C07C12722
Patent
active
042750776
ABSTRACT:
This invention is directed to novel urea derivatives of the general formula ##STR1## wherein A represents one of the groups ##STR2## X and Y, which may be identical to or different from each other, each represent hydrogen, chlorine or bromine;
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patent: 4170657 (1979-10-01), Rigterink
Wellinga et al., CA 79:88264(d), 1973.
Becher Heinz-Manfred
Prokic-Immel Ricarda
Sehring Richard
Wirtz Walter
Celamerck GmbH & Co. KG
Waltz Thomas A.
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