The CAS Registry Mumber 156769-97-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,7,6 and 9 respectively; the second part has 2 digits, 9 and 7 respectively. Calculate Digit Verification of CAS Registry Number 156769-97: (8*1)+(7*5)+(6*6)+(5*7)+(4*6)+(3*9)+(2*9)+(1*7)=190 190 % 10 = 0 So 156769-97-0 is a valid CAS Registry Number.
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Get Best Price for156769-97-02-Naphthalenesulfonic acid, 7,7-6-(3-aminopropyl)amino-1,3,5-triazine-2,4-diyldiiminobis4-hydroxy-3-(4-methoxy-2-sulfophenyl)azo-, potassium sodium salt