634173-90-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634173-90-3 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, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 634173-90:
(8*6)+(7*3)+(6*4)+(5*1)+(4*7)+(3*3)+(2*9)+(1*0)=153
153 % 10 = 3
So 634173-90-3 is a valid CAS Registry Number.