634173-64-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634173-64-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,4,1,7 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 634173-64:
(8*6)+(7*3)+(6*4)+(5*1)+(4*7)+(3*3)+(2*6)+(1*4)=151
151 % 10 = 1
So 634173-64-1 is a valid CAS Registry Number.