634591-66-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634591-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,4,5,9 and 1 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 634591-66:
(8*6)+(7*3)+(6*4)+(5*5)+(4*9)+(3*1)+(2*6)+(1*6)=175
175 % 10 = 5
So 634591-66-5 is a valid CAS Registry Number.