2, 4, 7-TRIETHERIFIED - N - ACETYLNEURAMINIC ACID DERIVATIVES AND METHODS FOR DETECTION OF INFLUENZA TYPE A AND B VIRUSES IN CLINICAL SPECIMENS

摘要

2, 4, 7-Trietherified-N- acetylneuraminic acids (referred to as 4, 7-dialkoxy-N-acetylneuraminic acid substrate in the specification) of the formula wherein R1 and R2 are alkyl groups containing 1 to 4 carbon atoms and R3 is a chromogenic or fluorogenic group.