The CAS Registry Mumber 129009-88-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,0,0 and 9 respectively; the second part has 2 digits, 8 and 8 respectively. Calculate Digit Verification of CAS Registry Number 129009-88: (8*1)+(7*2)+(6*9)+(5*0)+(4*0)+(3*9)+(2*8)+(1*8)=127 127 % 10 = 7 So 129009-88-7 is a valid CAS Registry Number.
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Get Best Price for129009-88-72-Naphthalenesulfonic acid, 7-(4,6-dichloro-1,3,5-triazin-2-yl)amino-4-hydroxy-3-4-2-(sulfooxy)ethylsulfonylphenylazo-, disodium salt