The CAS Registry Mumber 117653-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,5 and 3 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 117653-69: (8*1)+(7*1)+(6*7)+(5*6)+(4*5)+(3*3)+(2*6)+(1*9)=137 137 % 10 = 7 So 117653-69-7 is a valid CAS Registry Number.
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Get Best Price for117653-69-71,3-Benzenedicarbonyl dichloride, polymer with 1,4-benzenedicarbonyl dichloride, carbonic dichloride and 4,4-(1-methylethylidene)bisphenol, 4-(1,1,3,3-tetramethylbutyl)phenyl ester