four of the remaining eight lots of sodium 1-naphthyl phosphate met the following specifications : ( a ) sodium 1-naphthyl phosphate content greater than 80 % by a286nm measurements ( epsilon286nm1-np = 5630 l.mol-1.cm-1 ) and by enzymic conversion to 1-naphthol ( epsilon332nm1-n = 7560 l.mol-1.cm-1 ) , ( b ) free 1-naphthol less than 3 mmol/mol , ( c ) inorganic phosphate less than 10 mmol/mol , and ( d ) the catalytic activity concentration greater than 98 % maximum by absorbance assay and greater than 90 % maximum by spectrofluorometric assay during simultaneous comparisons of several substrates .
C0074757
sodium
C0031603
inorganic phosphate