| abstract |
(57) [Summary] (Corrected) (R is H, lower alkyl group, X is CH 2 , CH 2 C H 2 , O, S, SS or NR, and X is CH, C -OH or N, M is p-nitrophenylazo group, 2,4-phenylazo group, 2,4,6-trinitrophenylazo group, p-nitrostyryl group, p-benzoquinoneimino group, bis- (4-dimethylaminophenyl) hydroxymethyl group, 3-phenylisothiazolyl-5-azo group, thiazolyl-5-azo group or isothiazolyl-5-azo group, and k, j, and n are 0 or 1. ), A chromogenic compound that is selective in the determination of calcium in blood. |