NIR dyes, methods of preparing them and their use

Details NIR dyes, methods of preparing them and their use NIR dyes, methods of preparing them and their use

1992-10-26

1993-11-30

Cintins, Marianne M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 84, 546273, 548455, C07D22118, C07D22106

Patent

active

052666999

ABSTRACT:
The compounds of the formula I ##STR1## in which Y and Y.sub.1 are each, independently of one another, O, S, NH or N-alkyl, N-cycloalkyl,

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Chem. Abst. 90, 732286r (1979).
Derw. Abst. 86-328264[50] (1986).
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