Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1988-05-02
1989-07-11
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
544230, 544246, 548302, C07D48704
Patent
active
048473782
ABSTRACT:
Chromogenic polycyclic azamethines of formula ##STR1## wherein T.sub.1 and T.sub.2 are each independently of the other lower alkyl, cycloalkyl, benzyl, or, when taken together, are alkylene,
Ciba-Geigy Corporation
Mansfield Kevin T.
McC. Roberts Edward
Raymond Richard L.
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