641995-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 641995-71-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,1,9,9 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 641995-71:
(8*6)+(7*4)+(6*1)+(5*9)+(4*9)+(3*5)+(2*7)+(1*1)=193
193 % 10 = 3
So 641995-71-3 is a valid CAS Registry Number.