634165-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634165-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,4,1,6 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 634165-99:
(8*6)+(7*3)+(6*4)+(5*1)+(4*6)+(3*5)+(2*9)+(1*9)=164
164 % 10 = 4
So 634165-99-4 is a valid CAS Registry Number.