Richard S. Givens - Lawrence KS
Robert G. Carlson - Lawrence KS
Kasturi Srinivasachar - Rockville MD
Takeru Higuchi - Lawrence KS
Osborne S. Wong - Lenexa KS
Takeru Higuchi - Lawrence
Oread Laboratories, Inc. - Lawrence KS
A new class of substituted 2,3-naphthalenedicarboxaldehydes (NDA) is disclosed. Such compounds are of the formula: ##STR1## wherein one or more of R. sub. 1 -R. sub. 8 are various substituting groups. The above compounds react, in the presence of cyanide ion, with compounds containing primary amino groups to form adducts which exhibit a high fluorescent yield and thus are readily detected and measured by fluorometric assaying techniques.