| abstract |
REDUCED PYRIDINE COENZYMES, SUCH AS NICOTIMAMIDEADENINE-DINUCLEOTIDDE (NADH) AND NICOTINAMIDE-ADENINEDINUCLEOTIDE PHOSPHATE (NADPH), ARE CONVENIENTLY DETERMINED COLORIMETRICALLY WITH A STABLE AND INHERENTLY COLOR-PRODUCING INDICATOR COMPRISING A BENZOPHENOXAZINE OR BENZOPHENOTHIAZINE COMPOUND OF THE FORMULA: 1-(R=),3,4-(-X-(2,1-NAPHTHYLENE(-Y))-N=)-CYCLOHEXA-2,5-DIENE WHEREIN R IS OXYGEN OR THE GROUP R1-N(-R2)= IN WHICH R1 AND R2 ARE HYDROGEN OR LOWER ALKYL OF FROM 1 TO 6 CARBON ATOMS; X IS SULFUR OR OXYGEN; AND Y IS HYDROGEN OR HYDROXYL. |