Intrinsic factor-mediated modulation of cyanocobalamin–N-sulfonyl-acridinium-9-carboxamide chemiluminescence
摘要:
Two cyanocobalamin-N-sulfonyl-acridinium-9-carboxamides with linkage through the N-10 or 9-position were prepared from B-12-e-carboxylic acid. The noncovalent association of intrinsic factor with these ligands resulted in specific modulation of the associated chemiluminescence signal either by quenching or changing the emission profile. Either effect was sufficient to formulate a homogeneous assay to detect vitamin B-12 in buffer. (C) 2004 Elsevier Ltd. All rights reserved.
Intrinsic factor-mediated modulation of cyanocobalamin–N-sulfonyl-acridinium-9-carboxamide chemiluminescence
摘要:
Two cyanocobalamin-N-sulfonyl-acridinium-9-carboxamides with linkage through the N-10 or 9-position were prepared from B-12-e-carboxylic acid. The noncovalent association of intrinsic factor with these ligands resulted in specific modulation of the associated chemiluminescence signal either by quenching or changing the emission profile. Either effect was sufficient to formulate a homogeneous assay to detect vitamin B-12 in buffer. (C) 2004 Elsevier Ltd. All rights reserved.