Heterocyclic azo dyes and pigments containing 4-quinazolinone mo

Details Heterocyclic azo dyes and pigments containing 4-quinazolinone mo Heterocyclic azo dyes and pigments containing 4-quinazolinone mo

1977-09-28

1980-09-30

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106 23, 106288Q, 106300, 106300Q, 106308N, 106309, 260208, 4274071, 428411, 428413, 428480, 428500, 428538, 544245, 544284, 544287, C09B 2936, C09B 3312, D06P 152, C09D 1116

Patent

active

042254892

ABSTRACT:
Heterocyclic compounds of the formula ##STR1## wherein R.sub.1 denotes hydrogen or C.sub.1 -C.sub.4 -alkyl, or the two R.sub.1 s conjointly denote CO,

REFERENCES:
patent: 1032734 (1912-07-01), Bogert
patent: 3382228 (1968-05-01), Ferrari et al.
patent: 3923774 (1975-12-01), Dimroth

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