| abstract |
Substituted 4-oxo-4H-benz-[d,e]anthracenes are fluorescent dyes which are useful in biomedical studies and analytical determinations. They are particularly useful in assays for living organisms, e.g. microorganisms, carried out at a pH of 9 or less. For these determinations, the fluorescent dyes can be attached to reducible compounds which will release the dye upon reduction. Alternatively, these dyes can be used in assays for hydrolytic enzymes or biological cells containing these enzymes. For these determinations, the dyes are attached to blocking groups. |