Pentacyclic compounds and their use as absorption or fluorescent

Details Pentacyclic compounds and their use as absorption or fluorescent Pentacyclic compounds and their use as absorption or fluorescent

1995-05-30

1998-05-12

Achutamurthy, Ponnathapura

Chemistry: analytical and immunological testing

Involving kinetic measurement of antigen-antibody reaction

436536, 436172, 436800, 435 71, 546 42, 546 48, G01N 33557, G01N 33536, C07D22118, C07D49100

Patent

active

057504091

ABSTRACT:
Pentacyclic derivatives having the general formulae (Ia), (Ib) and (Ic) ##STR1## denote: hydrogen, alkyl with 1 to 20 carbon atoms polyoxyhydrocarbyl, phenyl, phenylalkyl with 1 to 3 carbon atoms in the alkyl chain, wherein the alkyl residues or/and phenyl residues can be substituted by one or several hydroxy, halogen, sulfo, carboxy or alkoxycarbonyl groups in which alkoxy can have 1 to 4 carbon atoms;

REFERENCES:
patent: 4622400 (1986-11-01), Hammond
patent: 4900686 (1990-02-01), Arnost et al.
patent: 5256799 (1993-10-01), Field et al.

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